Two OS X on two partitions

Hi!

I just want to know, if it is possible to install "Mac OS X" on two different
partitions? Like when you have windows installed, you can choose which one,
you want to boot-up in, when you start the Mac...

Should I just partition my hard-rive with "disk utility" and then boot-up with
my "OS X"-CD and choose the new partition, to install the second "OS X"?

Hope you understand me!

Yes, you can do this. You would use the Startup Disc preference pane to choose which drive to boot from then restart the machine and go.

Partitioning a different version of the Mac OS sound theoretically possible. If you have the install disk for the second OS X version number, I would just try to create the second disk mount using Bootcamp (under Application > Utilities). Unless that gives you some sort of error off the bat, I don't see why this wouldn't work. However, I have not tested it myself.

I must ask, for what reason are you doing this?

You do't need bootcamp to install two different version of OS X. Just create two partitions and then load a version on each of the partitions.