All right, this wasn't so easy like i thought. So, here's an explanation how to do it: (i made it all in suse 9.3, so it should differ in other distros)
1. install xorg-x11-devel, qt3-devel and kdelibs3-devel rpm's (from YaST in my case)
2. go to http://kopete.kde.org/index.php?page=cvs
After all this pain-in-the-ass process i still have problems trying to run it, so you may try gaim or wait til kde 3.4.1 is released... or maybe novell makes an update available from YOU.