i made this map for css or 1.6 in sketchup any way i can import into hammer or whatnot. i have the free version, but my sister uses the pro version for school if that would help at all. right now the file format is .skp
I highly doubt you'll be able to transfer that into hammer; hammer uses BSP's for mapping data, not 3d meshes.
And it sounds like google uses a proprietary format anyways....
You'll probably have to remap it in hammer.