There is a link in the introductory paragraph with all the support FAQs.
Great! Found it. I think I understand a little better now. So, I'll probably be good with Win 7 for a while, at least until it's time to get a new computer. Also, on the FAQs page, they gave this link for options once a product has been retired: Retired Product Options
Basically, you can upgrade, search the Microsoft Knowledge Base, ask in various forums, or find a local tech.
Oldmariner says, "Windows 8 is the new Windows ME.": Yikes! And then there was Vista, which I never used at all.