Yes, the BMV2 skin is 800 x 600 but that does not matter. You can use any size skin with any resolution with RR. It may look stretched ot squashed, but you can fit it to the screen. RR has a built in scaling ability.
Portion of the general.ini file in the Skin directory, in this case:
Road Runner\Skins\BMV2\general.ini
Code:
OriginalWidth=800
OriginalHeight=600
ShowWidth=800
ShowHeight=600
XPosition=0
YPosition=0
To force an 800 x 600 skin to 800 x 480, change the general.ini to read:
Code:
OriginalWidth=800
OriginalHeight=600
ShowWidth=800
ShowHeight=480
XPosition=0
YPosition=0
The first 2 lines are the actual dimensions of the skin's jpg's. The 2nd 2 lines need to be set to your screen resolution, to resize it to fit the current display resolution.