I have no CD or serial number just product number for Design standard 6

Unfortunatly, I have lost my CD and Serial number for the Creative 6 design standard Student and teacher licensing. I had downloaded it once before on my computer, but my computer crapped out and had to replace my hard drive. I am wondering if there is anyway I can still use this Product (obtaining the serial number some how) or if I am totally out of luck and forced to buy more software. I had the software for only a year, I hope there is something that can be done with this. I originally payed full price for this product and it would be a shame if I have just lost it entirely.