@ Macguru
I have used my Resizing Themes guide for you here by resizing the device graphics by 45.7%. Attached you will find the required files for 640x480 resolution. Replace the files in the main theme with these.
i have 4 OS : leopard , xp, windows 7, linux
i understand that there's only 3 items....
You will now see 4 devices, with the same image for XP and Windows 7.
Finally, for the Blackosx_Big_Screen theme
Download the 1024x768 one and then use the Resizing Themes guide by resizing the device graphics by 62.5%
That theme has graphics for all the devices.