I have tried all alternatives and resources that I found on internet to achieve to change screen resolution in my MacOS X guest. I have the latest VirtualBox version (4.1.22) and I have MacOS X 10.6.3 Snow Leopard running in a vm guest.

Some solutions that don't work for me are:

• Tuning virtual machine settings:

Adding and in the .vbox file, or running these two commands:

vboxmanage setextradata "MAC OS X" "CustomVideoMode1" "1360x768x32"
vboxmanage setextradata "MAC OS X" "GUI/CustomVideoMode1" "1360x768x32"

• Editing Guest OS boot configuration:

Modify /Library/Preferences/SystemConfiguration/com.apple.boot.plist with these lines:

<key>Kernel Flags</key>
<string>"Graphics Mode"="1360x768x32"</string>
<key>Graphics Mode</key>
<string>1360x768x32</string>

Any other suggestion, something that I was missing.

Thanks in advance,