Hi. I recently got a virus on my computer that keeps on popping up a system message saying that my computer is infected. It recommends me to install an antispyware program and links me to a download site for a program called PC Antispy. I used many virus programs and registry fixes so now the popup doesn't link to anything, but I still can't get rid of the popup itself. It stays in the system tray as a red button with a white cross and pops up the warnng message every 5 minutes. Please help me fix this.