They're not as easy to detail strip as a P series, and there are a couple of variants out there.
This is a CZ 75B Compact, but I think it's close enough for any CZ 75B.
http://drstrangegun.blogspot.com/2007_06_01_archive.html
The pics and instructions should help you get the hammer out and back in.
If the gun is a decocker model, I wouldn't try to take it apart past fieldstripping.
Just a warning, the grip screws on my CZ75B were installed with some sort of threadlocker on them. It was quite a chore to remove them. I damaged the screws in the process--fortunately, part of the reason I was removing them was to install new screws. Philips head grip screws just aren't right!
Some more pics and instructions for reference.
http://czechpistols82792.yuku.com/topic/14688/t/CZ-75-Trigger-job-lots-of-pics.html
http://czechpistols82792.yuku.com/topic/14690/t/A-Do-it-yourself-Trigger-Job-with-photos.html
Here's an armorer's manual, but it's not very well written and doesn't have many pics.
http://www.scribd.com/doc/44900554/Cz-75-Armourer-Manual#