Problems w/my wireless LAN...?

I have a laptop that has a wireless card in it. My landlord set up a wireless LAN for the house. I had to restore my computer, but now I can't use the LAN. It connects to it (I had to enter the network key the first time). It automatically connects and says the connection is excellent. However, my internet explorer won't work. I took my laptop to school and it works fine with the school's wireless connection. Also, there is a school by where I live w/wireless that I can connect to, but my own wireless won't work. If the connection is excellent, why won't explorer work? I have windows XP. I haven't installed any additional protection because I haven't even got my explorer running again. The computer has a firewall built-in but it doesn't even help when I turn it off. Any suggestions?

Problems w/my wireless LAN...?noton

go to start run cmd and in block box type ipconfig release and renew

it will work try installing firefax so you have alternate for IE

also you should renew your ip every time you login to new

network.

Problems w/my wireless LAN...?stinger

Are you sure that the Internet connection is working? Can anyone else get online?
What鈥檚 landlord's router brand and model? What鈥檚 your signal strength and noise? If distance could be a factor try changing channels in router to higher frequency (number). It could also be interaction from some electrical device. Beside see this:

http://answers.yahoo.com/question/index;...