Ugg, 9.1....
I'd get yerself off of that version ASAP.
SuSE 9.1 leads to frustration. Frustration leads to anger. Anger leads to the Dark Side.
9.3 - wait 10.0 - is available for download starting now.
Seriously, though, if you launch Yast and go to installing software, it should be in the list.
Otherwise, you'll have to compile it yourself. Though that sounds freakish for a newbie (I'm still one after almost two years.) it is really easy.
In either case, you'll need to first ensure that you have the folloiwng libraries/apps loaded and operational.
http://dvd-slideshow.sourceforge.net/download/
* dvdauthor 0.6.11 for creating the correct dvd video file structure
* mjpegtools for encoding mpeg2 video and audio
* ImageMagick 5.4.7 gives me errors with some menus. 5.5.4 or higher should be better. For image manipulation and menus
* urw-fonts >= 1.1-8 for nice fonts
* ffmpeg > 0.4.8 for AC3 audio
* [optional] lame for mp3 audio and oggdec for ogg audio.
* [optional] toolame For faster mpeg2 audio encoding. Works with version 0.2L and 0.2M.
* A recent version of mkisofs from cdrtools that has support for UDF filesystems
* dvdrecord from dvdrtools if you want to actually burn dvds.
If you have those, you should be okay. Most - if not all - of these can be gotten from yast as well. Be sure to add packman to your list of Yast sources (I think they still have a 9.1 repository.) Check my sig for the Yast Sources link.
The author is very cool and willing to help out. I had some issues with MP3 encoding so he sent me a new build with some MPEG4 encoding options.