Windows System Programming

Hey guys...it's my first time here.  I am glad to see there is a board dedicated to programming.  Anyways, here is my dilemma.  I am trained and skilled in Unix System Programming.  I recently got a job at my University working to rewrite some code for a malware detection program.  Here's the kicker...its on Windows XP.  I know next to nothing about Windows System Programming...I imagine the concepts are similar.  But what I need is a recommendation of a good book on the subject.  Or a link to a PDF for it?  Any suggestions?

http://msdn.microsoft.com/en-us/library/ms123401(v=MSDN.10).aspx