Recently I was infected with a virus I believe. Now on start up I get error messages that don't really say anything, they have weird characters and stuff. My background at first didnt work, and when I would right click it it would act as if it were a webpage. Later it became a webpage saying you have spyware, an obvious fake advertisement. I've run Ad-Aware and deleted a lot of crap but a few couldn't be deleted. One of them was called DrPMon.dll in system32 folder and the other was systb.dll in the windows folder. It also keeps popping up porn. Does anybody know what this is or how to fix it? I'm running windows XP.

Please follow owen's Instructions and then post your log in a new thread in the Spyware, Adware, Viruses and HijackThis Logs section. (Not in this section please).