Save screenshot

So, the iPhone comes with the ability to take a screenshot by hitting the lock button and the home button at the same time. I'm pretty sure this action can be initiated from an Obj-C command too. Is this feature available, or would it be difficult to develop an extension for?

I have a bit of Obj-C experience, I have an app on the app store developed entirely independently of MMF2 (natively in XCode and Interface Builder and nothing else), so I'd be willing to create this extension if anybody else was interested, just gotta wonder how hard it'd be to do and if I can find the time...