By adaptor I assume you mean the wireless adaptor for your PC snd not the router. If so then you can use any wireless adaptor that supports 802.11b or 802.11g as well as cards that support Netgear Super G. Virtually all readily available wireless cards will support at least one of these standards but if you use a USB adaptor make sure it is plugged into a USB2 socket. Also make sure the card support at least WPA security so it can be locked down to prevent unauthorised use as much as practicable.
Vince
15 year olds racing cars - Sponsors needed for 2008 -
MVRacing.co.uk