Great! Thanks!
However, the deathmatch possibility is only in GTA III and Vice City. There's only racing mode in SA.
When I read the wiki-article, I found out about SAMP (San-Andreas MultiPlayer). It has DM and some other neat mode's. However, when I tried to run it, I get an multiple errors.
I also had some problems when I tried to download the client, I couldnt extract it cause the zip file was corrupted. However, I could download the exe file.
SAMP on wikipedia