Windows 7: Can't connect to my home network w/7

I am running two other XP Computers using the updated version of Network magic, and they connect no problem. Every time I try I get a message saying "Router or access point issue". I have restarted it many times and still can't get it to go....I can see it on my list of wireless networks, but can't connect to it. Home group isn't enabled. So why is it a router issue with this computer but not the others?? I can connect to the internet via my internal network card, but the connection is much slower then if I could connect to my home network. It's frustrating. Can someone advise??

Your post is a little hard to follow. I think your problem is that you cannot connect your Windows 7 computer to your wireless network. Is that correct?

Yes, that is my problem....I can't get my Windows 7 machine to connect to my home network. My XP computers connect just fine.

What version of Windows 7 do you have? What router do you have? What make/model computer do you have, and what wifi card do you have?