I can't give you much advice about your leg. Just don't go overboard on your leg work, you'll probably to take it slow and easy until you get it up to speed. On the brightside you can focus on getting lean, and start working on your cardio on the mean time.

I'll just drop the link off here just in case there's other people interested so they don't have to pm me. http://rapidshare.com/files/3318983/XTremeLean.rar You just need winrar to extract it. You can check out their website for more info.