my computer went bad, trying to recover Quick time 7 pro without buying it again. How do I go about it?

the serial number is contained in the purchase receipt sent by Apple.

Same problem.. After a clean install, trying to reinstall qt7 pro, but it does'nt seem to accept my serial... Came with final cut studio...

See my answer in your other post.

https://discussions.apple.com/thread/4881037?tstart=0

x

Final cut studio will register Quicktime as Pro version automatically as part of the installation process