Learn a language:
http://www.programmingtutorials.com/
Grab a CodeBase:
http://www.andreasen.org/newmud/
And start tweakin sunshine!
If you get anywhere with it, do come back and show it off eh!. Or if you need any help along the way, you know where we are

Good Luck.
Oh and theres these guides here that might help your *** along:
http://www.gignews.com/morrow1.htm
http://www.gignews.com/morrow2.htm
/tlm |
OnRPG Crew