How do I fix my wireless internet from disconnecting constantly?

I'm using a Linksys Wireless G Adapter. I seems that it loses connections every couple minutes. I always have to go to Control Panel; Wireless Network Connections; Properties; Wireless Networks and reselct the network I join. Somewhow it always resets the password and I have to retype it it. How do I fix it so it will STAY on and not disconnect? Thanks in advance.How do I fix my wireless internet from disconnecting constantly?
store the password, it could not change it by itself.

if the problem lasts, please try to download wireshark and diagnose your network.

http://networkmonitor.blog.com