How to model a character with sketchup?

[j0DiG0]

Hi,
how can I model a character wich sketchup, who looks like this:
http://sketchup.google.com/3dwarehouse/details?mid=2d673bbed346b74c21204f72dc5f023
http://sketchup.google.com/3dwarehouse/details?mid=5170f5d0a8de4766b5e839f5c8837f98
Is there any tutorial, which I didn't found?
What I'm special intersted is how to model the chubby parts like Legs arms stomach and face etc.

Or a other question does anybody know if there is a possibility to import "Maya" models into Sketchup?

[JaViXP]

Not really sure, but you can try with Sketchycat's human tutorial.

Hope this helps