Hi, I have a problem with my home's wireless network. Yesterday, I did a fresh install of windows xp sp2 in my laptop (Dell Inspiron 1501) and everything went fine, except that now I can't connect to the wireless network that's set up in my apartment.
I've tried all the steps that forums all around the internet list, like releasing/renewing ip from cmd screen, removing and recreating the network in my laptop, updating the wlan card's driver and I even shut down my firewall, but nothing seems to work.... The only way I can connect to the internet is through the ethernet adapter, and I can access the other computers in my LAN, but when it comes to connecting to the wireless, it "sees" the signal, but never gets an ip assigned... I think it has something to do with the "unable to reach your dhcp server" message I get when trying to renew the ip, but this dhcp thing's got me completely puzzled... please help

This might be irrelevant to your situation, but have you recently added any thing to your house such as wireless cameras or wireless phones etc? I worked on a Pubs wireless LAN & it baffled me until I finally remembered they had just added a wireless camera system & sure enough, it was interfering with the wireless LANS signal.
I could connect directly to the router & the Jukebox was working (internet jukebox but is connected directly to the router) & I could only get the signal when very close the the wireless routers signal. That's what led me to believe it was the camera system & it was, so I told them to either keep the cameras & ditch the 802.11 (which would of been a bad idea) or to just get a wired cam system. So they just gave up the cam system.
Just a thought if youv'e already tried other things.