I looked into a few of the Classic mac emulation packages and the amount of work always looked off putting -- in fact I think some even required finding a ROM if I recall. It's actually easier for me to dust off my giant G5. And yes abecedarius another challenge you may find is that if you have the real Hypercard it would be a series of floppy discs which can no longer be read.

Side note: My other dream has been to run NeXTstep on my Mac -- I understand that can be done too, but it looks like a ton of work.