http://www.lgu.ac.uk/~lawrence/Mayfest/index.htm

(Rules site for Mayfest)

http://www.mayfestlarp.co.uk

(Players site for Mayfest)

http://www.larpweb.co.uk

(LARP site that hosts another Mayfest site)

http://groups.yahoo.com/group/mayfest/ 

(Players group)

http://www.bioware.com

http://nwn.bioware.com

Neverwinter links

THE GOD OF NEVERWINTER MODULE BUILDING!

http://nwn.bioware.com/builders/builder_profile_eligio.html

(You can't miss this, this is a profile of Eligio Sateceta who wrote the custom content guide.  The guide itself gives you all the info you'll ever need to produce your own customised games and a link to it is available from this page.)

http://www.reapers.org/nwn/reference/

A complete scripting resource to aid you in vital scripts for the game.  Some good examples here and some excellent explanations as to how variables work.