For the second problem...Try this because you must use photoshop and it is very difficult...
Take from my skin the file spr_speedlimit_eu.bmp rename it as spr_speedlimit_usa.bmp
And put the file spr_speedlimit_usa.bmp in your resolution....
ui_android/800_480 or ui_androi 1024_768 or ui_android/480_272

best regards