Guys,
Came accross these two sites. You lot may already know about them, but just in case they are useful:
http://www.b737.org.uk/ - A seemingly very comprehensive site for 737 info and tech quizes. Also contains all those performance charts as used in the ATPL Flight Plan course. Some very good articles too.
http://www.phd.nl/aviation/wx/ - Has upto date SigWX and high level wind charts as used in the ATPL Met course.
Hope they are of interest,
HWD.