APM on AMD64

I recently upgraded to a AMD64 machine and install Suse 9.1 on this. However it doesn't seem that the install has correctly configured APM in my kernel, even though according to YAST the linux-atm package is installed. As a result my modem will not work as it's using pppoatm. What do I need to do to get ATM to work ? Does anyone currently have atm / pppoatm working on a AMD64 / kernel 2.6 machine ? Hope you can help.