<< You could have paid $10 several months ago to be a beta tester. Just for the sake of it, I paid the money and became a beta tester. M$'s download servers for RC1 are heavily congested, so I can't say that I've tested it yet.
CRC is a way to test for a files integrity. You can download programs that check an .iso file, but you have to have a .crc file I believe.
That's all I'm saying, I hope I haven't helped anyone with this "hypothetical" iso file. >>
You didn't pay to become a "beta tester." You paid to be in the Windows XP Preview Program. Not exactly "beta testers."