Remove a soft ware program

I need some help, I down loaded the trial version of an antivirus program called Antivirus8 or AV8, I decided that i did'nt want this program and tried to uninstall it, this program has hijacked my computer and will not uninstall, it is driving me crazy because it constantly pops up trying to get me to purchase the full version, can anyone tell me how to get rid of this pesky piece of crap......HELP ME PLEASE!!!!!!!!!!!!!!!!!!

Hello.

Download OTL by OldTimer to your Desktop.

• Close all windows and double click OTL.exe
  
• Click Run Scan and let the program run uninterrupted
  
• It will produce two logs for you, one will pop up - OTL.txt, the other will be saved on your Desktop - Extras.txt. Post both logs in this thread.
  
• You may need to use two posts to get it all.