Why won't my wireless connection work???

Hello,
I'm using XP Service Pack 2 on my PC at the moment, I put that on my PC way back in May and my wireless connection Belkin G Plus Mimo Adapter was working fine until Saturday after 5pm I had a trojan a fake program getting me to buy anti virus software, I did a system restore and all of a sudden my internet doesn't work which I find very weird, I have tried everything to get it working all I get is no wireless networks in range make sure wireless switch is on, well I've turned the router on and off and it hasn't done anything at all, I've uninstalled an reinstalled the Belkin Adapter and it still doesn't work, I have tried refreshing the network list and nothing shows up. I went on command prompt it says media disconnected, so don't know what the hell is wrong with it because I have a popup on my system tray that says one or more wireless networks detected but when i click on the message it shows, nothing is shown on the wireless network list. I have tried everything and I am losing my patience because I am running out of ideas on what to do, if I wiped my harddrive clean would my wireless connection work?? The only thing Id have to do is put Service Pack 2 back on again but that's not a problem and it's not a problem putting all my programs back on either. I just need some advice here please help!!