I think it is best to use the cd that came with it, but to be sure, you could make it a dualboot.
Keep your standard version on there and install Enterprise next to it for the duration of the course.
Probably 85% of what you need in 2003 can also be found in standard, just a few things that you would really need EE for.
I think EE has support for more cpu's and ram, but you won't get to that limit, unless you have one of them skulltrail things or a dual quadcore Opteron or Xeon.