Can I install virtual machine additions on Fedora 9? If so - how?

Depends what os you want to run. You can run linux with uml - http://user-mode-linux.sourceforge.net/

I am running ms server 2003.
I am running virtual server 2005 on it
I have a working fedora 9 system on it.
i'm just wondering if i can install ms virtual additions on it - and how?

It's not on the list of supported Linux OSes but you might still give it a go. See http://www.microsoft.com/technet/virtualserver/downloads/linuxguestsupport.mspx for more info

I have a box running Fedora 6 that is running VMWare Workstation just fine...  There's only one catch with installing VMWare on Fedora--there's a problem in VMWare's installer where it looks for installed items that are there, but it doesn't find them properly.  This causes VMWare's networking module to fail.  There is a patch that you need to run to allow VMWare's networking module (vmnet) to install properly.  the Google Groups vmkernelnewbies has info and the tarball containing the patch in question:

http://groups.google.com/group/vmkernelnewbies

Kelv1979: I had tried that to no avail
guitarist5377: You mis-read the question

Thanks anyway - maybe sometime in the future   :)