I've had problems with SuSE's Partition feature. I've tried it on 3 computers, and had to resort to Partition Magic 8 each time. It can't repartition NTFS, and it doesn't do well with FAT32 either.
If it is only seeing 456 MB, that could explain why you are not getting a GUI interface. A minimal install of SuSE 9 is 500 MB, a basic install can run you 2 GB, so it looks like you need to wait for that copy of Partition Magic.
If you are at a command prompt, but the GUI is installed, typing "startx" will launch your default GUI (KDE in SuSE). However, you can only run 1 GUI at a time. If the command doesn't work, try hitting F7 to get out of the command prompt.
However, once you get your hard drive repartitioned, you should be able to install without a hitch. Good Luck.
