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).
Hmm my hd3650 mobility works wonderfully in Ubuntu 8.10. Just had to install it through safe graphic mode.
When Im in the freshly installed Ubuntu (in safe graphic mode, as the radeonhd shipped with 8.10 doesn't work), I just download the latest fglrx driver, and do this:
Now in the directory where you downloaded fglrx, do:
chmod +x ati-driver-installer-9-1-x86.x86_64.run
./ati-driver-installer-9-1-x86.x86_64.run --buildpkg
sudo dpkg -i *.deb
Voila... Then just add:
Driver "fglrx"
under "Device" settings in xorg.conf. Nothing else. No need for running aticonfig --initial as it might segfault.
New install, followed your instructions. But, there was no selection for 'safe mode' at boot. I did a search for keys to press at boot for safe mode but found nothing that worked.
I think I'll just wait a while, maybe updated drivers will appear sometime soon.