You will need to install it via the Desktop Manager application. I believe if you open Desktop Manager and select Application Loader, then you will see in the list something for Memopad.
Answers to common questions: BlackBerryFAQ.com
Search for answers: Search
Google Talk ID: jckitch78
Thanks I downloaded the SO for my 8700 and now I have the memopad again. the problem is that I can't yet sync it with notes Journal. ( the option for sync is in false in the BES, and I can't change it).