Hiding a visible window while allowing it to continue running in the background

So I recently set up a VirtualBox VM on my Windows 7 machine so I could access my XFS hard disk through a network share.

Being there's no way to hide a VirualBox VM by default (even by running in headless mode), I went ahead & wrote a quick C# program to hide running windows.

First of all, I created a batch file to run my VM headless...the contents are as follows:

cd "C:\Program Files\Sun\VirtualBox"
VBoxHeadless.exe -s Ubuntu

Simple enough?

Here's my error-prone, crappy window hiding app:

https://github.com/cjones26/HideWindow