demos via usb?

is dere anyway to download demos on the pc, put them on a usb drive and do a quick transfer onto the ps3 instead of a slow download? I doubt there is since psn provides em...but it doesn't hurt askin.

I know it would take long on the pc too but i still wanted to know.

p.s. i have a crap internet connection (background story)

I checked out a few websites and couldn't find anything on this so i'm going to have to say no.