|Look at the link below. Seems like it may or may not work by just using the disk as the qualifying product. In that case you would then need to reinstall WinME and upgrade from there. |
I would suggest that you just cleanup the present installation.
One thing just came to mind. When you upgraded you should have had a choice to save some files that would allow you to return to WinME. If you did that those files should suffice as the qualifying product.
If you wish to try cleaning up then use CCleaner slim as a start. Run both the cleaner and registry modules.
If you have programs you do use anymore remove them prior to running CCleaner slim.