Ok well i am having some problems with the internet on my Linksys Wireless-B Router.
see what i did was i tried port forwarding to see if it would make the internet faster,and well now after ive done that all my computers connected to the router on wires works,but my wireless computer doesnt work.
so is there anyway i can undo port forwarding?

Go into the Linksys router (it's either http://192.168.0.1 or http://192.168.1.1) and scroll down the left side until you get to port forwarding (That's how it was in my Linksys router).

i figured it out the internet works now what i had to do in case someone else has this problem,well just to make sure everyone understands the problem,when i forwarded the port my wireless computers internet stopped working.
here are the steps to fix it:
(Windows XP)
1.go to start
2.then go to run
3.type in cmd
4.let it pull up then type in ipconfig /release
5.now do the same except ipconfig /renew
now it should work.