Windows 7: Having a nightmare with internet connection

Hi all,
I have a HP Pavillion Desktop with a micronet wireless adaptor.
My router is a Linksys wag160n ((rev1) annex a), with the latest drivers.
I am running Windows 7 build 7100 and using the Kapernskey Windows 7 beta firewall/av
My wireless network at home uses WEP authentication.

I have tried everything to get the Windows 7 pc to connect to my router!!
All other wireless laptops (XP) work perfectly, PS3 and Wii, connect no issues.

The Windows 7 PC will connect to a neighbors unprotected network with no issues and connects fine to my router via a wired connection.

If I check the list of MAC addresses in my router the Windows 7 pc is visable (and allowed, I don't have MAC filtering switched on).
The PC is telling me Ipv4 is connected but IPv6 no network connection.
I tried switching my wireless security off, still no connection.
I have run the troubleshooter (nice to see that hasn't improved), no luck.
I have deleted all networks in Windows 7 and started from scratch both with a manual config and letting windows detect the network settings which it does, but no luck.
Pinging the router is inconclusive, I have had 100% failure, 75% and 25% all as general failure.
I am at a loss, the only thing I can think of is that my router is not compatible with windows 7!!
I have spent some time trawling the other similar threads and can't find an answer.
Anyone have any other ideas??

Well besides the obvious uid/password I have a thought. If you lappy connects to a neighbors unsecure network then its not the lappy networking. It may be the neighbors router is a stronger signal for the laptop to see and may be conflicted. I would try with the laptop sitting right next ro the router and the wep encrpytion turned off to connect.

Ken

Ok, so I set the tower up next to the wireless router "Excellent" signal strength an no internet problems at all.
Move the desktop pc back into the room where I want it and limited/no connectivity, but connected to the network!! with a "Good" signal strength. (This is the same strength as my neighbors network), so I'm now thinking it's a conflict with the networks. (Cheers Zigzag).
Have tried changing the broadcast channels on the router but no results.
The PC was built from spares and an old G rated wireless card, so I am going to go get a "N" rated card and see if that helps.(The router is N rated)

That fixed it, if anyone else if having similar problems.