If you have 9.1 personal you'll need:
Don't make life even more difficult for yourself, (like I did), by downloading the source for gcc and trying to compile it yourself - this is hard because gcc is itself the compiler. Chicken and egg. Instead, go to the suse ftp site here
and download the appropriate rpm(s) (pre-packaged software) which you install using SuSE's YAST tool. Open the rpm(s) in Konquerer and simply click on 'Yast Install'.