Windows XP -- digital camera/photo features

Since the wizard will work as a standalone application, do you know at this point if one will be able to download it to their exisitng OS, such as W98 or W ME (similar to downloading Microsoft Media Player).

I ask this for the following reason: the printing wizard sounds great but I doubt I will buy into Windows XP because of the expected registration and reregistration scheme. If I understand the issue correctly, I do not want to have to call Microsoft every few times should I need to reinstall the OS.

THanks, gail