Alright this may be a bit confusing so I am going to try to keep it real simple.

I am fixing my friends computer and got pretty much everything to work except and form of network connectivity.

I have 3 NICs in there and none work. The three are a Marvell Yukon (built in on motherboard), D-Link (pci connects but keeps getting limited or no connectivity), and a Dlink wireless (unable to start).

I have tried updating all the drivers to their latest drivers and I even rolled back to no avail.

Everything shows up with the right NAME and such but wont work whatsoever.

I have tried hardcoding an IP, that didnt work. I rebuilt the winsock stuff....still nothing. I uninstalled and reinstalled all the drivers and none work.

The only thing on the computer that doesnt work is the networking end.

Plus this is a clean windows xp install with sp2.

Please help. Thanks.Are all necessary services running and protocols installed?
Disable any firewalls and other security.
Ensure that all drivers are sourced from the VENDOR and not from M$ Updates.
Ensure that straight through and not crossover CABLES are in use and that those cables are known to be good.

Remove all add-in NICs and try the built in NIC first.
Connect it up, disable DHCP at the router and give the NIC a static IP. Set DNS to the router default IP (Same as gateway - Usually 192.168.x.1).
Navigate to the router setup page. Does it open?
If not, repeat the above with each addin card after DISABLING the onboard NIC.

If none work, what errors are generated?
Does Event Viewer hold any clues?
What does an ipconfig tell you?