Windows xp media center edition 2006 .... need a copy of original disk?

I have recently had a hard drive failure on my pc, total DSOD ( totaly lost) i have tried a few disk recovery programs but the disk must be badly damaged,,,, my problem is that i have lost my disk that came with pc and i need it to re-install windows on my new hard drive, i have the COA sticker with serial on pc and would be grateful if anyone can help me by either directing me to somewhere that i can download iso or any format of the disk to re-instal, or if anyone has a copy of the same , i would purchase a copy of the original or buy the original, i have the serial to instal it Many thanx in advance ,,,,,,,,,,,,,,,, pedro