Contact Adobe... this is not Adobe support, it is a user to user forum with the space provided by Adobe
Adobe contact information - http://helpx.adobe.com/contact.html
Or, this link has information on downloads to then use your serial number
The Elements Tutorial Links Page http://forums.adobe.com/thread/1275830 may also help
-has links to the FAQ/TIPS pages AND download versions 7-thru-12 if you lose your disc
If I understand you correctly, you had 2 discs for your purchased Premiere Elements 10 and cannot find the 2nd.
The second disc should be for CONTENT (Instant Movie Themes, DVD Templates, Title Templates.......). You can
download that CONTENT free. Please see the details in my blog post which includes the online link and other how
to information on the topic.
Just in case note, install the program before the CONTENT.
Thanks. Please let us know the outcome.