read the kernel configuration help, when you're choosing your security level. It will tell you what features are in each level. If you want more information on each feature, choose customized after you choose your security level. You can then view the help on each feature, and change your setting accordingly. Also, to fix X on your system, download chpax from
http://pageexec.virtualave.net, compile it, and run chpax -sp /usr/X11R6/bin/XFree86
-Brad