Hello Vader and welcome to the forum
'Boundary Force Field' is a thing that the game has that prevents players from steping over the link to easily; the game will sort of adjust the player so that he doesn't step out of bounds. The higher the level (-> 100) the harder it is to step out of bounds, and the lower the lever (0 <-) the easier it will be.
For the CAP's, have a look in this:
http://www.nbaliveforums.com/ftopic20738.php
There you'll find a Rodman as well as a rookie-cap for Kemp and Robinson. You can request CAP's in that thread also.