A BK is one of the hardest things to get off! You should feel GREAT about that! :2thumbsup:
For the collections, I would just treat them like regular collection accts and dispute them.
Read here:
Basic Step by Step Beginner's Guide to Credit Repair
And then also just stick around and search the forum for similar situations. If you want to post specific accts and ask for advice, feel free to do so.
Good luck and Welcome.