This stops most malware loading at boot up (they can't be deleted while running) and then un-installing or re-naming the file. Is it listed in you CP>add/delete programs list? There is a valid Privx software also.
You can also start task manager and scan the "processes list" & if you can find the processes this uses you can disable it there before trying to delete/un-install.
You can download & install Malwarebytes MBAM.exe remover if your running WINXP SP2 or above. See this post for instr. & links:
Let us know how it goes as more ideas available.