F10 and Virtualbox Resolution

[Tanguy Eric]

I installed F10 as guest with virtualbox on winxp. My laptop is in 
1280x800 resolution when i use screen and 1280x1024 when i use external 
monitor.
In F10 i installed guest additions and system-config-display because 
xorg does not seem to detect the monitor correctly. In 
system-config-display i select a standard 1280x1024 monitor and restart 
X. Now i can modify the resoltion but i don't see the 1280x800 one. How 
can i add this resolution to the choice ?
Thanks
Eric

-------------- next part --------------
A non-text attachment was scrubbed...
Name: eric_tanguy.vcf
Type: text/x-vcard
Size: 396 bytes
Desc: not available
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20081126/98cc8044/attachment-0001.vcf>