Getting back into running- advice?

[Becky]

I've been an "on again, off again" runner since college. Never really got serious about it, and typically run only when I can't ride (e.g., travel). That said, I've decided to start running with a couple of friends at a local park once a week. Both the social interaction and the cross-training will be good for me.

Cycling has given me the fitness to do 2 or 3 easy miles without too much trouble. I'm more concerned about the effects of impact on joints and muscles that aren't accustomed to running yet. I'm also concerned about a nagging IT band that, while better than it used to be, still gives me little twinges now and then (treating with active isolated stretching, foam roller massage and ice, as needed).

So, experienced running ladies, what advice do you have with regards to injury prevention and how to safely "ramp up" distance for someone trying to get back into running?

ETA: I do have good shoes that were properly fit by a local running store, so I think I'm ok there.

Thanks in advance!