hello mauri

welcome to techzonez

first thing is to try the free online virus scanner

this has found viruses on computers with uptodate virus scanner software

its better safe than sorry

next

goto
www.lavasoftusa.com and get ad-aware and scan your computer for spybots and adservers
delete everything it finds

all bad stuff
reboot and see if that help


if not reply here and we'll try again

cheers
egghead