T60H65 wireless mini pci adapter

So, I dont think the problem lies in driver of network card. It could be a lot of issues related.

http://www.microsoft.com/athome/moredone/wirelesstips.mspx
http://www.lifehacker.com/software/wireless/improve-your-wireless-network-ten-different-ways-248600.php
http://www.helpero.com/Questions-and-answers/Networking/Wireless%20connections/How-to-improve-your-wireless-network_10539.html

You might have to change the antenna for better ones that helps to provide more reliable signals. Below are few ways to trouble shooting wireless:

Sometimes a system error can cause a computer to lose or "forget" a network connection. This can also happen when your computer goes to sleep or a notebook computer does an auto shut-down due to low battery power. In this case, restarting your computer will force the machine to attempt to reconnect to the network. Keep in mind that many laptop computers do not fully power down unless you depress the power key for at least 5 seconds.
1. Restart your computer.
2. From the Start menu (lower-left corner of the screen), select Control Panel.
3. Windows XP Home: Double-click on .
Windows XP Professional: Double-click on .
Network and Dial Up Connections
Network Connections
4. Double-click on Wireless Network Connection.
5. The connection should show as enabled and show you are connected to the Wireless Network.
6. If you are connected, launch your web browser to visit the wireless network authentication web page. Windows XP automatically detects and displays installed network cards. If you do not see a Wireless Network Connection icon, skip to the Network Hardware Settings section of this document.
Remember, wireless connections can be especially sensitive to fluctuations due to antenna and signal strength.
Determine Whether You Have A Network Connectivity Or Application Specific Problem.
Determine if your problem is specific to an application, by opening up another Internet application, such as Internet Explorer .
Check your network software settings:
1. From the Start menu (lower-left corner of the screen), select Control Panel.
2. Windows XP Home: Double-click on .
Windows XP Professional: Double-click on .
Network and Dial Up Connections
Network Connections
3. Double-click on Wireless Network Connection to view available wireless networks.
Windows XP automatically detects and displays installed network cards. If you do not see a Wireless
Network Connection icon, skip to the Network Hardware Settings section of this document.
Windows XP Home: If your status is 'connected' skip to step 12.
Windows XP Professional: If your status is 'connected', click properties before moving on to step 12.
4. If Wireless appears on your network list, select it and click . Launch a web browser to see if you are directed to the Wireless login page to authorize your connection to our wireless network.
Connect
5. If you do not see the Wireless network listed, click on the button in the lower left corner to add
it.
Advanced
In the Preferred Networks section, click on the Add button.
Click on the Association tab. Type Wireless in the Network name box. This is case-sensitive.
For Data Encryption select Disabled. Click OK to exit and save your changes.
5. Under , you should see the brand name and model number of your ethernet card. If your
ethernet card is missing, skip to the section of this document. Connect Using Network Hardware Settings
6.Under This connection uses the following items you should see:
Internet Protocol (TCP/IP).
7. If the TCIP/IP network protocol is not installed, you will need to add it, otherwise, skip to step 12.
8. To add the TCP/IP protocol, click Install to open the Select Network Component Type box.
9. Select Protocol and click Add. This will open the Select Network Protocol box.
10. Select from the list of available protocols. Click to exit the Network Control Panel and install the
TCP/IP protocol. Say when prompted to restart your computer.
TCP/IP OK
Yes
11. Check your TCP/IP properties by selecting the
and clicking on .
TCP/IP Protocol
Properties
Select Obtain an IP address automatically.
Select Obtain DNS server address automatically.
Click OK
12. Click OK to save your settings.
13. Restart your computer and attempt to connect to the LC Wireless Network by launching your web browser.
Disable WEP Encryption
Our wireless network does not support Data Encryption. If you persist in having problems connecting to our network, check to make sure
data encryption is turned off in your wireless card setup (usually accessed by clicking on the Advanced tab in your wireless connection properties).
Check your network hardware settings.
1. Click with the RIGHT mouse button on the My Computer icon and select Properties.
2. Click on the Hardware tab.
3. Click on the Device Manager button.
4. View devices by type. Expand the list of network adapters by clicking on the sign by the Network
Adapter listing.
5. If no wireless cards are listed, you may have a faulty card. Consult your system documentation to make sure you have a wireless card. You may also need to contact your computer manufacturer for further troubleshooting assistance.
6. Double-click on your wireless card to view properties.
7. Check the area in the middle of the properties window to see if your network card is
working properly.
8. If your card is not working properly, you will need to remove and then re-add it.
Drivers are typically found on the diskette or CD-Rom that came with your card. You can also download network card drivers from most manufacturer's web sites.
LOCATE THE DRIVERS
FOR YOUR WIRELESS CARD BEFORE YOU ATTEMPT THIS.
9. Click to return to OK the device manager tab.
10. Note the name and model number of your wireless card and then click remove.
11. Click OK to return to the Hardware Tab.
12. Click OK to exit System Properties.
13. Restart your computer.
14. On restart, Windows will detect your wireless card and launch the wizard. Follow the
prompts to add your network card. Add New Hardware.
Disable Other Network Connections
1. If you have more than one connection method listed, such as a Local Area Connection, it may be
interferring with your wireless connection. You may need to disable the connection before you can
connect to the Wireless network.
2. From the Start menu (lower-left corner of the screen), select Control Panel.
3. Double-click on Network and Dial Up Connections.
4. To disable a connection, double-click on the connection icon. Click on the button to turn this
connection off. You will need to go back to your Network and Dial Up Connections folder to enable
these connections if you wish to use them at another location.

Post back when you can.