How do I rig a character for Garry's Mod?

As you probably can tell by now, I need help. I have 3D Studio Max 2010 and I already have the character ripped from the game. Can someone post a tutorial on how I would use the program to rig a character for Garry’s Mod? :dance:

http://www.facepunch.com/threads/542906-Mario-s-Guide-To-Ragdolling?highlight=

It’s for Max 8, but it should still be useful.