Got a belkin 802.11g wireless adaptor have followed instructions to install it but every time i turn the computer on im having to repair the connection before it will connect,it usually just comes up with limited or no connectivity before repairing it?

The issue here is the IP address that it is using. Each time you "repair" the connection it is asking for a new IP address from the router. So there is a few problems that might be existing, you may need to increase the TTL time for IP address leases so that you assigned IP doesn't reset in a few hours. Or you could static the IP address in a part of your subnet so that you dont have to recieve new IP address from your network (downside to this is you have to change this if you leave your network to try and join another)
http://www.hotcomm.com/FAQ/FAQ_staticIPXP.asp