WINDOWS SYSTEM SUITE

Hello,
I have Windows Systems Suite on my PC. Have tried now for three days to get rid. Been on to different sites and dowloaded so called free anti-virus help. Do not want to pay a registry fee. Pop ups occur all the time and are driving me bonkers. Have own anti-virus Ad-Aware (which is normally brilliant) but because of the windows systems suite i can not open it. PLEASE HELP.