Money is a standalone program which requires the installation disc to install on your XP machine. I believe some versions of Works Suite did include Money, and this is probably what you have on your ME computer. You would need to remove it from the original machine and reinstall using the supplied CD on the XP computer. Unless you are in the situation where Works (including Money) was supplied with the ME machine. Then it has to stay there.
Money is not supplied with any version of Windows. You could try this as an alternative. click here