if you really want help...
If you really want help on this, you need to do two things...one, you need to start a new thread so that people acutally read your problem and don't think it is just discussion on the XF86Config-4 file and how to understand it. Second, you need to actually print the errors you get, not just the programs that give them to you. For instance, if I were to compile a program, I don't say...
'I am gettng an error from gcc'
and then post that...I actually post the error so people can do something about it.
You don't need to reinstall anything, all you need to do is track down the problem. Reinstalling is a M$ fallacy.