I have a trendnet usb adapter that works well with XP using their software utility. For Vista, the utility is not supported and trendnet says to basically establish a connection using Windows wireless configuration. However when I try, it finds my wireless router but when I enter the passphrase, it says its not correct. I also tried entering the xx-digit long passkey but that didnt work either. I am using a netgear wireless-G router and my wep key security is set to 128-bit. In XP I just have to enter the passphrase and it connects automatically.