blank applet

not sure if this goes here... sorry if I misplace this.

Ok, I have a program we're writing in class... it is a brick-breaker game (you have a few rows of bricks, a paddle, and a ball that bounces around breaking the bricks).

There is a lot of stuff I have left to do on it, and only a short time left to work on it.

SO, I wanted to take it home.

When I put it on my computer at home though, everything compiles fine, and I get no errors when I run it... and yet, it only shows up as a white box like this:

Now, the Imports we're using are from a .zip file we were given called "acm"... To run the program in school, we had to go to "SETTINGS ------> PATH / CLASSPATH -------> WORKSPACE --------->CLASSPATHS (tab) -----------> NEW -----------------> BROWSE..." and then find the acm.zip file. Once we did that, it was good to go.

My teacher let me take everything related to the program home with me to work on here.

I did all the above, and I still get the blank applet (I'm using the EXACT same program from school, the EXACT same program thing to write the program [JGRASP] on the same version as at school, and I have the EXACT same items, files, etc... as at school).

Is there anything else I need to do to get this to work?