Blender and Gmod

I know absolutely nothing about content creation for the source engine games, but seeing as I might get more into it over the next year I was curious if its possible to use Blender to create models for Source games, and if possible, who has done it who could give me some advice?

It’ll be the same as the other 3D modelling software try here for details http://www.facepunch.com/showthread.php?t=734991 (you really should have looked down the page before posting :P)