[Spinnetti]

No, you are out of luck. Further, if you compress it, it takes a bunch of processor time to decompress it. Clearly, this is a deeper topic than we can cover here.. Suffice it to say, No, this will not work well on a low spec machine, and no, you can't compress it or run it off CD (even if technically possible, it will be a lot slower). Get a cheap external HD?