IMHO to hell with ACL. but others have installed and use it. I think more here prefer cm9 if anything, but research that. My tp is stock webOS and I'm cool with that still.
To doctor, you just need to have the right one on your computer. It installs itself, just have java current. Turn off devmode, do a full reset, then put into usb mode so when you connect it, you're computer will see it. More detailed instructions are on this forum just search with Google and you'll find them.
There are recovery threads already explaining better than i could, so read those.
Reset, doctor, create profile, install app cat cert update, then use wosqi to install preware and start rebuilding your apps and patches.
Everything you need to do is documented here, spend a little time getting familiar again.
"It's a quest! A quest for fun."
- Clark Griswald