If that doesn't work either, then do this:
Go to Start->Run and type in notepad and hit OK. Then copy and paste the following into Notepad:
sc stop HACKERDEFENDER100
sc delete HACKERDEFENDER100
Save the file as "delete.bat". Make sure to save it with the quotes. Double click on it.
Do a search for these files:
svhost.exe (not "svchost.exe")
For the above files, also search for them in the registry. Make sure to back up your registry before doing anything though since everything done there is live. If you need help with this part, feel free to ask. I will provide more instructions if needed.