I have a feeling you can't install SUSE on your first partition if there's already something on your second partition. Or something like that.
Basically, you want to install windoze first on the hard disk then install SUSE.
It worked for me. After you have SUSE installed, upgrade your kernel to 2.6.0. You will need to check the box in xconfig to allow dodgy drivers to be installed because unless you want your hdd in PIO (slow) mode you have to install the SATA support for Silicon Image.
for more infor on Sil3112A and SATA. It may also apply to normal IDE drives if you're using one. I don't know.
See the tutorials section of www.newtolinux.org.uk