Have version 10 on old computer which I downloaded. Have not got original download app. How do I get a new app to load or how do I transfer the whole thing to my new computer. Many thanks David
If you mean you purchased it from adobe as a download, if you go to the main page of adobe.com and click on My Adobe on the upper right side of the page under the search box, you will eventually wind up in your adobe store account where there may still be a link to download it again.
When you're done with your old computer be sure to deactivate PSE there (Editor>Help>Deactivate).