We had a CotP group for online D&D 4th ed. which ran for quite awhile and was very fun. Unfortunately, time constraints ended up pulling me out of it. I was also playing at a local comic shop weekly until a few years ago.
If you are looking for a group and there are no CotP members who are available to play, I suggest checking out sites like EN World. If you do a google search, there are a number of sites that help bring players together, either in RL or over the internet. Our CotP internet games worked very well and were a load of fun (at least for me), but if you can swing it, RL games can't be beat.
If you want to try to set up an online game, the resources that we used are all set out in the D&D forum under pen and paper games. Its been a number of years now since I played, but if you have questions I'll try to help.