OK, if you want to use linux you should know a little about Unix. It's a serious OS but still not very beginners-friendly. (It will be in future, I'm sure). You can find some basic commands on this site:
Experiment a lot, and for details on a command, type:
and the manual page will be displayed. (Leave with q).
About your problem: If you ran xf86config (as root) and found your card and you set the settings for your monitor right, it shoult work, but if it doesn't I think it's best to use your card as a simple VGA-card. Now the instructions:
Log in as root.
type the next lines:
mv /etc/X11/XF86Config ~/XF86Config.bak
cp /usr/X11R6/lib/XF86Config.eg /etc/X11/XF86Config
try to start X again (startx).
You can find a lot of info on your problem on:
btw XFree is a beast, but once it runs, its very nice to work with.