Any of you guys ever heard of this software? They tend to use it a lot in Colleges and University Libraries to monitor what you’re doing by viewing your screen and occasionally controlling your keyboard and mouse. In the past I’ve noted that PunkBuster takes random screenshots to help establish/confirm if you are cheating. I was wondering, are there any applications out there capable of blocking my screen from them, e.g. responding with a blank screen.
If so where may I find this, if not, any recommendations on how I would write a program to achieve this?

NetSupport, I have a download if you want, uses a direct connection to that main PC to watch you. There is no true "hiding" of the screen. However, you can do some simply programming or use a small app to change window names/etc. Or if it is for web browsing, you can make your own small web browser quite simply, or I can show you the project I am currently developing, I've used it before with great success in hiding. As you can typically see when they are looking at you with a small mouse jerk.
As far as Punkbuster, yes, you can use a program/hack that can make screenshots blank/clean. Typically most high end/quality hacks should include anti PBSS. However, this is of course a hack/cheat so you have potential to get banned here.