what do you want to know? "what all frontend support 640x480"...
I think you mean one of two things (with answers)
"WHY all frontends support 640x480" A: because people use that resolution, and it is usually driven by a skin
"what forntend supports 640x480" A: I think all or all the actively developed ones at least... These are all run with skins and you will need to find a skin that is in that resolution. You can use RR which will automatically resize skins to whatever resolution you choose. NeoCar will also auto-size skins for any resolution
2005 Range Rover 4.4 Any ideas for putting a PC in this? :)