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Windows 2003 Server RRAS Client Connects But Cannot Ping Anything On The Remote Network

I have setup RRAS on a Windows 2003 Server and as a client I can establish a PPTP VPN connection and receive an IP Address on the remote network and can also ping that address. However, I cannot ping anything else. I cannot ping the RRAS server or other devices on the remote network.

Additionally, once I connect to the PPTP VPN, I cannot browse the Internet any longer. Seems like all my traffic is going through the connection and then going nowhere from there.
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Hypercat (Deb)
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hypercat, It is already in place. I have "Router" selected along with "LAN and demand-dial routing." Below that I have "Remote access server" selected. Any other ideas?
What have you set up as far as assigned the IP addresses to the VPN clients?  I would check that and make sure that it's handing out the right subnet, DNS and gateway addresses.
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The clients are receiving the right ip addresses and DNS settings, but there seems to be a gateway issue alright. I'm not sure how to set up a gateway and I don't know if it's something that's even done in a normal RRAS VPN setup.
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RobWill,

Are you sure the RRAS server can't share the same IP subnet? We have other RRAS servers at other locations sharing their same local subnet, with their DHCP pools excluded, and they work fine. The only difference is that the server that I'm having problems with is Windows 2003 Server. My other two RRAS servers are setup on Windows 2008 r2 Server.

It's strange, I can connect just fine and receive an IP Address from the server. I can ping the IP address that I receive, but I cannot ping the RRAS sever or anything else on that subnet.

Additionally, from the server I cannot ping the connected client's IP, but on my other RRAS servers, I can ping the connected clients.
>>"Are you sure the RRAS server can't share the same IP subnet? "
Not sure I explained properly.  RRAS can use the same subnet as the corporate site LAN, that is not a problem, though some (not me) do not recommend that.  The issue is if the The corpoarate LAN and or RRAS uses say 192.168.100.x  then the site from which the VPN client cannot use that as their own local LAN subnet.  Fine for the PPP/VPN adapter, but if thier router hands out 192.168.100.x you will have this problem.

It is a very common problem when using common subnets such as 192.168.0.x and 192.168.1.x  
Subnets on each network segment must be different, that is a basic rule of routing.

Having said that if the "use remote default gateway" option is enabled, which it is by default, you can useually access the server, but no other device on that network.

Perhaps from a client connect to the VPN and then post the results of  ipconfig /all  and also route print
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I want to make sure that if anyone else runs into this issue, they will have the correct solution. I am only assigning myself the minimum amount of points, which is 20 points.