What burning program are you using? Nero Burning ROM is A pain in the ....
Here is how to burn your CD so you can run it
1 - download the iso - the file name should end with a ".iso" extension
2 - open up Nero or other favourite CD burning app
3 - select - burn image to CD
4 - select the iso file, and click write
Is this the process youv'e followed?
Sometimes the .iso is faulty,
Try deleating it and Re-downloadong it again.
OR
Try burning the .iso image from another machine (don't laugh it works)
OR
I'll send you A copy Just send me your Post Adresss via E-mail and i'll send you a copy.
Hope this helps,
Jake