Cannot Delete a File

Hello
I am using HP laptop with XP Os. Whenever a start my laptop on the deskto
screen a always a setup file opens up and ask it install it
I have deleted the files but when i re login the file exists with this .ex
fil
some other file like .pf also comes back in windows folder
I have deleted these files many times but it still come backs
I have cleared the temp files, cookies, history but it didn't make an
difference

On Fri, 10 Sep 2010 07:57:43 -0500, milan-vazir wrote:

> I am using HP laptop with XP Os. Whenever a start my laptop on the desktop
> screen a always a setup file opens up and ask it install it.
> I have deleted the files but when i re login the file exists with this .exe
>file
> some other file like .pf also comes back in windows folder.
> I have deleted these files many times but it still come backs.
> I have cleared the temp files, cookies, history but it didn't make any
> difference

Malware has this behavior. Which anti-virus program do you use?

Hans-Georg