Help: New user needs help w/ Windows SDK

I've just bought Delphi7 to capture images from my USB camera. The
Help instructions for windows SDK seem straight forward but I can't
get anything to work.

Would someone be kind enough to give me instructions to do something
simple with the SDK video capture library.  Maybe a pulldown menu
showing which capture devices are loaded on my system.

Once I've got started I'm sure the rest will drop into place.

btw I'm using Win2K