Can't get 1280x800 resolution on Fedora 9

I installed VMware Server 2 on my laptop (IBM Thinkpad T60; Windows XP professional; 1280x800 widescreen), and then create a Fedora 9 virtual machine (Redhat Linux). In order to have full screen, I installed VMware Tools and configured them.

After that, I can have full screen. But I can get 1280x800 resolution.It's not in the display list. I added "1280x800" in xorg.conf, but still can not get it work. I checked Xrog.0.log, and got a error message: "(II) VMWARE(0): Not using mode "1280x800" (no mode of this name)".

Anybody has any idea?

Thanks.