NT Event viewer

I am considering writting a piece of software that will interigate the event viewer on several servers at the same time and return detailed reports from a search.

EG. check 3 servers for logon/logoff and lockout details.

I am in need of a detailed list of descriptions for event numbers for NT4, Win 2k & XP.

If anyone knows of a freeware package that already does this or has worked with the event viewer from Visual Basic and can help I will be very grateful.

Thankyou.