I've bugged you a few times on myspace and AIM (OKP InstruMental).
From what I know of Pro Tools, it's pretty similar to some other DAWs in that it's really designed for electronic-type music..so unless it's got a turntable-effect plugin, you'll have to depend on some pre-scratched sounds.
Either that or if you can, you could scratch a little bit while recording and edit it down to a transition-length clip.
But there are some pretty healthy banks of turntable scratches of various kinds out in the wild world of the innanets.
Also, there are probably a stack of cats who would be happy to scratch something for you for the hell of it. I certainly would, if I owned a direct-drive table and knew how to use it.
6. "RE: how do you scratch in Pro Tools?" In response to Reply # 0
Yeah i reccomend that you get out and meet some dj's that can scratch....cuz those pre-recorded scratches (i.e. Reason, garageband, etc) are straight up corn ball! Sound horrible