Sharing internet connection wirelessly using XP

I would like to be able to share my desktop's broadband Wanadoo internet connection with my laptop.

I have a peer-to-peer network setup wirelessly, with my desktop PC and laptop. I cannot share the internet connection.

My PCs can see each other (I can share files and the printer) but cannot share the internet connection.  

Whenever I open IE 6 on the laptop, rather than sharing internet connections, I am just prompted to use a dial-up connection (wanadoo pay-as-you-go).  This happens all the time - even when I'm already dialed-up to broadband on the desktop PC. If you choose "work offline" at this stage no pages can be viewed.

I used to easily be able to share internet connections using a network cable direct from PC to laptop - you just loaded IE on the laptop, chose the network connection and my desktop dialed up automatically. I now need to use wireless networking.

The connection on the laptop is set as "allow  other users to connection through this computers internet connection" and the other two boxes are ticked on the "Advanced tab"  (establish dial-up and allow network users to...)

The desktop and laptop both have XP SP2 installed
rwallacejAsked:
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Pete LongTechnical ConsultantCommented:
Sharing an Internet Connection

To share an Internet connection you have the following options.
1.      Use Windows ICS (internet connection Sharing)
2.      Use Some Proxy Software
3.      If your using Cable/DSL use a dedicated switch/router
4.      If you using Windows 2000 Server use NAT under RRAS

*****ICS*****
Since Win98SE all versions of windows have been able to use ICS. One PC has an Internet connection and shares it with other Computers (Hosts) on your network. For a full description of ICS see http://www.practicallynetworked.com/sharing/ics/ics.htm
To set up ICS..
For Win98  http://www.practicallynetworked.com/sharing/ics/icsinstall.htm
For Win ME http://www.practicallynetworked.com/sharing/ics/icsmeinstall.htm
For Win 2K http://www.practicallynetworked.com/sharing/ics/ics_win2k_install_dup.htm
For Win XP http://www.practicallynetworked.com/sharing/xp_ics/serverdialup.htm
To Troubleshoot ICS
http://www.practicallynetworked.com/sharing/ics/ics_troubleshoot.htm

*****Proxy*****
To enable your PC to act as a proxy server you need to install Proxy software, then configure the clients to use a proxy server for their Internet connection.
Business users see
ISA Server http://www.microsoft.com/isaserver/
Wingate http://www.wingate.com/
Small Office and Home users see
FREE
AnalogX     http://www.analogx.com/contents/download/network/proxy.htm
SOLSoft NSM http://www.solsoft.org/nsm/
JanaServer  http://www.janaserver.de/start.php?lang=en&menue=home
DeleGate    http://www.delegate.org/delegate/
TRAILWARE
EZProxy http://www.lavasoftware.net/en/content/ezproxy/download.htm (15 Days)
Proxy+    http://www.proxyplus.cz/ (31 Days)
EasyProxy http://www.nycsoftware.com/easyproxy/

*****Router/Switch/Firewall*****
If you have cable or a DSL connection this is the best (though not the cheapest route) to go down. This equipment will plug into your exiting router and do the work for you, you can also get them with built in wireless.

This is what I use (with 54g wireless)
http://www.linksys.com/Products/product.asp?grid=33&scid=35&prid=601
Cheaper option (slower wireless)
 http://www.linksys.com/products/product.asp?grid=33&scid=35&prid=544
Cheapest Option (No Wireless)
http://www.linksys.com/Products/product.asp?grid=34&scid=29&prid=561

*****Using NAT under RRAS*****
See
HOW TO: Configure the NAT Service in Windows 2000
http://support.microsoft.com/default.aspx?scid=kb;EN-US;310357
HOW TO: Configure a Windows 2000 Server as a Network Address Translation Server
http://support.microsoft.com/?kbid=299801
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rindiCommented:
Are you connecting to the WLan via an Access Point? If yes, you have probably been assigned an IP Address etc via the DHCP Server of your Access Point. A possibilty could be for you to add the internal IP Address of your Desktop PC in the Setup of your AP as the Gateway Address, making sure it gets passed on in DHCP to your DHCP Clients. If that doesn't work don't use the DHCP Server of your AP and use the Setup for your WLan cards using the internet shaaring wizard of your desktop.
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rwallacejAuthor Commented:
I have bought a dedicated switch/router, and now can share internet connections.

However file and print sharing now no longer works!

How do I fix this?
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Pete LongTechnical ConsultantCommented:
what OS's?
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rwallacejAuthor Commented:
the pc with the wireless router is running on Windows XP

my laptop is Windows XP Pro. I have another laptop with Windows XP (not Pro). Neither laptops can share files.

I'll add that of course the server PC has file and print sharing enabled. I have ran the networking wizard too
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Pete LongTechnical ConsultantCommented:
Networking XP

*****Most Networking Problems with XP*****

Are caused by Firewalls (either hardware or software)
If you have Zone Alarm, Black ICE Defender etc turn them off! If the problem goes away, you need to reconfigure the firewall. Also Windows XP by default has a built in firewall (ICF) to disable
1.  Open Network Connections (Click Start, click Control Panel, and then double click Network Connections.)
 
2.  Click the Dial up, LAN or High–Speed Internet connection that you want to protect, and then, under Network Tasks, click Change settings of this connection.
 
3.  On the Advanced tab, under Internet Connection Firewall, select the following:  Clear the Protect my computer and network by limiting or preventing access to this computer from the Internet check box. This disables the firewall; your computer and network are then vulnerable to intrusions.


*****Full Walkthrough of networking XP Home*****

How to Set Up a Small Network with Windows XP Home Edition (PART 1)
http://support.microsoft.com/default.aspx?kbid=813936
How to Set Up a Small Network with Windows XP Home Edition (PART 2)
http://support.microsoft.com/default.aspx?kbid=813937
How to Set Up a Small Network with Windows XP Home Edition (PART 3)
http://support.microsoft.com/default.aspx?kbid=813938
How to Set Up a Small Network with Windows XP Home Edition (PART 4)
http://support.microsoft.com/default.aspx?kbid=813939
How to Set Up a Small Network with Windows XP Home Edition (PART 5)
http://support.microsoft.com/default.aspx?kbid=813940
How to Set Up a Small Network with Windows XP Home Edition (PART 6)
http://support.microsoft.com/default.aspx?kbid=814003
How to Set Up a Small Network with Windows XP Home Edition (PART 7)
http://support.microsoft.com/default.aspx?kbid=814004
How to Set Up a Small Network with Windows XP Home Edition (PART 8)
http://support.microsoft.com/default.aspx?kbid=814005


Adding XP to a network

http://www.practicallynetworked.com/sharing/xp/addxp.htm

Windows XP Network troubleshooting

http://www.practicallynetworked.com/sharing/troubleshoot/
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