Windows ME is one of the worse windows versions ever, you will notice that a lot of people don't use it. ME cannot manage it's memory properly, something every OS should/can do.
Even people with over 128 megs of ram have problems, offcourse M$ denies it and hasn't fixed the problem ever since. But then again allmost nothing is shipped with ME anymore.
So switching to Win 2000 might be a better solution.