I'm not sure about SuSe, but there is a guide for Ubuntu here that might give you the idea: https://help.ubuntu.com/community/RadeonHD (I've also used this procedure successfully with other Debian-based distros, though I didn't have to manually edit the build files for m4 macros as suggested in the guide.)
In general, you'll need your distro's Xorg development packages/libs, autoconf/make, the mesa development packages/libs, PCI(access) libs, m4 macros, and basic development tools (gcc, binutils, gawk, etc.)
My computer (F8Va with HD3650) won't work with neither radeon or radeonhd driver, not even with the vesa driver, all I get is a white screen. I'm using Kubuntu 8.10 AMD64. I had to install in text mode and install the ATI propietary so I could use X.
I also have a T500 with a mobility 3650 and have been unable to get it working. I've tried drivers from different sources and nothing works. As best as I can tell the 3650 isn't supported in Linux (Ubuntu).