I have Vista home premium on my desktop PC and connect to a D-Link DSL-G604T modem router using a Linksys wireless-g PCI adapter. Some of the time, the PC will connect to the network but if it does, it usually drops out after 5 minutes and then I can't connect again. I get many different error messages each time:

Your modem or router is not available
Cannot communicate with DNS server (10.1.1.1)
There might be a problem with one or more network adapters on this computer
Windows has confirmed that this computer is currently experiencing a network connectivity problem
Connection Interupted
There has been an IP address conflict



My laptop can connect to to the modem fine and doesn't drop out when connected and there connection strength is very good from my desktop when it is connected.

Thanks in advance,
Kieren