Welcome aboard Waterland, Like others have already posted feel free to ask questions and we will do the best we can to answer them.
The A2000 for $15 is a steal of a deal. You will get lots of use out of it. Its a great clasic games machine. Does it have a hard drive and what OS is it running?
EDIT: Ok thats great :-D Now with the original boxed games (not copies) you can install a program called
whdload this alows you to install your games directly to the HD and thus not dammaging the original disks.