Boot off the SuSE cd and go into their installer. When it gives you the option to partition, see if you can recognize your new SuSE partition (hopefully it lets you see partition labels).
From the SuSE installation, tell YaST (I assume that's their installer) to format the new SuSE partition and mount it as your / directory. You should also be able to see your NTFS and Fedora partitions...ignore them. Fedora and SuSE can share the same swap space, so you already have that. I'm not sure what you want to do with /boot. You say you use a tool called Boot Magic, so either format /boot and let SuSE install LILO or GRUB as a bootloader, or do whatever you need to do to get Boot Magic having the new SuSE partition as an option.
Once you're done with /boot, /, and swap, just finish installing SuSE. This will put SuSE on your SuSE partition, and leave Fedora untouched on your Fedora partition.