I downloaded Threatfire antivirus and Zone Alarm Firewall from download.com i cant get them off.?

I downloaded both of these softwares from download.com. I didnt like them so i uninstalled them correctly and no longer appear in the list of programs. but when i check my security center, it says both zone alarm and threatfire are on and reporting to be working. HOW DO I GET THESE THINGS OFF FOR GOOD? I HAVE VISTA HOME PREMIUM. PLZ HELP!

I downloaded Threatfire antivirus and Zone Alarm Firewall from download.com i cant get them off.?suzuki

I use Windows XP Pro. Have no knowledge of Vista. If your platform can perform the following task as Windows XP Pro., here is the instructions on how you get rid of the fragments left in your PC, that shows up on your security center.

Go to your tray start, open run and type in: c://program files, click on browse, click on program files and look for either "pctools", or "threatfire". Reason is that pctools is the owner of threatfire. Delete either one or both if shown.

Now go back and perform the same procedure and delete "zonealarm".

Should pctools or threatfire not delete, because, says file is being used, then reboot your PC, and go back and follow the same procedure and should delete this time.

Now go to your tray start, and open search, type in pctools and allow your pc to search. If the file is found delete from top to bottom. All that refuse to delete reboot and go back again and delete. Type in threatfire, let your PC, scan an all files that come up related delete top to bottom. Same for zone alarm.