Compiz.desktop not loading at startup.

[Maxorata]

Hi,
I've installed XGL on my computer under KDE on SLED 10 (32-bit). I've followed the instructions (I think) and all the packages are installed. I'm using the Compiz-Quinn Packete. My compiz.desktop application does not start. I get this error:

"The desktop entry file /home/pedro/.kde/Autostart/compiz.desktop has no Type=... entry."

I also get a black screen, cannot see my desktop, only the main panel and taskbar. I've read this is common with Nivida cards, so I figured that If I can get Compiz.desktop to work I might be able to deal with the black screen later.
Can any one help me solve this problem? Why ins't compiz.desktop loading, and what should I change to make it work?
Thank you very much for any help you can provide.

[bigtomrodney]

what content have you put in the desktop file? It may be more straightforward to just create a script to do this.

[Maxorata]

what content have you put in the desktop file? It may be more straightforward to just create a script to do this.

I copied and pasted this into the compiz.desktop file using Kate:

[Desktop Entry]
Encoding=UTF-8
Exec=/usr/bin/compiz-start.py
GenericName[en_US]=
StartupNotify=false
Terminal=false
TerminalOptions=
Type=Application
X-KDE-autostart-after=kdesktop

I found this information here: http://en.opensuse.org/Using_Xgl_on_SUSE_Linux
Obviously I'm doing something wrong.

[Maxorata]

Ok,
I think I've found the solution myself. I've been playing aroung with Kate and noticed that there is an option under "Tools- FileType-Scripts-Python". I chose that option and the script is loading now, but I still have the black screen problem. I know I have to change some settings in xorg.conf but I can't find this folder or file. Where is "xorg.conf"? Can you help me solve this problem, please?
Thanks.