Pop Up Cloaker................ in D drive????

Problem is there is nothing in my D drive ....It is empty.
when I go to Explore (gives me a list of my computer Hierarchy)
I found that this file resides in c:hp/bin/cloakerbak.

That being said, what does this file do ????? It seems that it was created at the same time with a file called treat which resides in same area c:hp/bin/treat.


I am trying to research what the Popup on My Parents Computer is actually.

I have Win XP at home but I have no such file. My Parents Computer is a HP Pavilion XT938 thats why the hp/bin file.

Any help would be appreciated....thanks