uninstalling AdKiller problem

[olderairhead]

I run win xp and wanted to uninstall AdKiller.
I did the initial uninstall via control panel.
I then did a search for AdKiller and deleted all files except one:

AdKiller.exe

Every time I try to delete I get the message:

Cannot delete AdKiller: Access is denied
Make sure the disk is not full or write protected and that the file is not currently in use.

Any ideas greatly appreciated

 

[Endemix]

Have you restarted and then tried to remove it?

Also, make sure it is running in task manager. If it is, close it and then delete the file.

 

[olderairhead]

Endemix as suggested it was a running process in task manager. Once I stopped it I could delete it.
Thanks