I found this post over at avsforum by steven975, i guess theres still somewhere online to buy powerdvd 7 ultra. Click on this link and you'll see the software for sale, only 29.99 USD too. I've never used this site so I don't know if its legit but the OP said it worked for him...Caveat Emptor, YMMV, disclaimer, asterisk etc.
http://soft-buy.net/search.php?query=powerdvd&x=0&y=0
Heres a link to the original post
http://www.avsforum.com/avs-vb/showthread.php?p=14579343#post14579343
http://soft-buy.net/search.php?query=powerdvd&x=0&y=0
Heres a link to the original post
http://www.avsforum.com/avs-vb/showthread.php?p=14579343#post14579343