There's no way the PureBasic team can produce and maintain documentation for an SDK of that size. However, if you download the Windows 2003 SP1 sdk here:
http://www.microsoft.com/downloads/deta ... laylang=en
you can burn it to a disc and install it to your harddrive. Then, whenever you're in the PB IDE you can place the cursor on an API command, say something like SetTimer_( , and it will pull the relevant page right up off your local disk. It's excellent documentation, quite complete and easy to navigate.