I don't have Vista on this computer. I think I do have IE7 on the other one, with Vista though

Hmmm thanks! Maybe it's not the router that is the issue (as I keep changing it to g to be compatible, new one is n) but the IE7 interference??? Sigh, sorry... worth a try for me!
Raynaadi, what kind of usage do you incur on your computer? Or what types of things have you NOT tried with IE7?