QUOTE(luskesq @ Mar 4 2012, 11:48 PM)
I found a product @ Home Depot called Motesenbocker's Lift Off 4, Acrylic Anamel & Spray Paint Remover. It is water based and actually does a decent job even with 2 stage paint. For vinyl I'd test a small sample first and I think I may have used it on some in the past without any problem. Works very good on rattle can overspray. Relatively cheap also, it comes in a 4.5oz container for about $5-6.00 IIRCC.
Good luck,
Keith
I've used this too, and with good results on vinyl. The sooner you clean it, the better it will work, try to clean it before the paint has too much time to cure. The toughest part was letting the stuff do its' magic, I think they recommend spraying it on and waiting 15-20 minutes before wiping it off.