how to transfer license key for Acrobat 8 Standard?

Hi Guys!

Urgently need your kind advice on how to extract/transfer the license key of Adobe Acrobat 8 Standard to other Notebook?

I'd changed my notebook and urgently need to reinstall Acrobat 8 Standard at new notebook.

Having an issue whereby I could not retrieve the license key (Enterprise Software).

All your kind advice upon this is highly-appreciated.