Request some castle models
 

I am looking for some castle models for my project. I will be grateful if anyone can share me some:o.
I find these on google 3d warehouse but I don't know how to convert these, can someone help please
[url]http://sketchup.google.com/3dwarehouse/details?mid=ac17238cc4d1a1a066f19f26ac490096&prevstart=0[/url]
[url]http://sketchup.google.com/3dwarehouse/details?mid=293a53745d4b3fc05e979bd400196e89&prevstart=0[/url]