Hi Pete, with a resume like that you'll find autocross to be a bit different!
After 10 years of autox I ran Lime Rock in the Skippy cars, felt like I should be eating lunch on the main straight. LRP packs 7 corners (if you count Big Bend's double apex as 2) into 1.5 miles, at our old Ford club events we'd run 1.5mi but with more like 70 corners.
The event I re-posted about was weeks ago - the thread title was from last year.
I will tell you my next event is 20-July with the SCCA - good spectator event or good novice instruction if you wanted to try it but I'd suggest checking it out once before you sign up for a whole day thing. I'd offer a ride but that gets complicated with the SCCA insurance stuff - you'd have to be a member or at least weekend member.
Clubs links:
www.ner.org (SCCA New England Region)
http://renegademiata.net/
http://www.boston-bmwcca.org/
http://www.baystatecorvetteclub.com
http://www.ne-svt.org/
http://www.trackclubusa.com/
http://www.sccnh.org/ (autocross is in NHMS parking lot)
Looks like SCCNH has an autocross school scheduled for August, could be a great thing but I'd actually suggest doing an event (or two!) first to get the most out of a school.
HTH/Cheers,
- Jeff