first question: when i open playonlinux i keep getting a msg stating that i dont have "3d acceloration" and that i should install it, wut is 3d acceloration and how do i install it?
You have to install drivers for your video card to get 3d acceleration.
second question: i noticed there are quite a few games on this program, and i was wondering are they the actual game itself or are the programs to run the games?
These are scripts which allows you to install game designed for MS Windows environment, these are not games themself.