Thanks Oldman, I just happened to see the same advice from someone called Igor on another string. Here I've been waiting around for an email with a download to appear. This way is so simple. I wish they'd give some instructions with the purchase.
Next problem: I did a download of a trial on my husband's Laptop of the Pro upgrade. I really wanted download, not a trial, but that's what was offerred. Now I need a key. I assume I go back and click on buy now on his Laptop to buy him a key.
I did run the download, but I didn't uninstall the Home edition first. The Laptop says I'm still running Home edition. Do I have to uninstall, reboot, install Pro, and then get a PRO key to make that Laptop work?