Easiest way is to just disguise it by making it show up as "svchost.exe". It'll get lumped in with all the others, and will become indistinguishable. That would be the safest route to follow actually, because ordinary programs should have a way to be closed by the TaskManager - that is why the TaskManager exists.

Here is a VB.NET way : http://www.codeguru.com/forum/showthread.php?t=406555

So it is indeed possible, but I would really, really advise against it.