There's this:
http://www.tritonedigital.com/index....hk=1&Itemid=20
which does what you want. However if you don't want to go that route with PT then there's always alternative daws. Seeing as how you're on a Windoze machine I'd suggest you take a look at Sonar X1. I have an ancient Winbox that runs the older Sonar 8.3.1 and does pretty much everything you want. Reason I didn't go for the newer version? I'd need a new computer and I'm not buying another Winbox. Macs for me now and Sonar doesn't run native on a Mac.
Sonar - number of tracks only limited by your computer's power, works with pretty much interface you want, no latency compensation limits issues (limits that PT has), and is 64 bit and has been for years. And I think it's cheaper than PT.