Microstudio installation problem

[Perplexed]

I recently upgraded the hardware in my computer and now am unable to re-install Microstudio. I receive an error message to this effect:

"Our records show that your registration code was already registered with a different computer."

I no longer have a copy of the email you originally sent with the download link included.

All help is greatly appreciated regarding this matter.

Thank-you!

PS. I hope that I am posting to the correct forum! I am a forum newbie!