PlayCenter is up to version 3 by now. You might try that.
But...PlayCenter is an awful, bloated mess. Even on a completely clean install it typically gives me problems and random hangs.
WinME isn't doing you any favors either. I can only imagine that the awfulness of playcenter and the awfulness of WinME interact in terrifying exponential ways.
Try the new version. If that doesn't work, you might try a clean O/S install? Or a format of your NMJB?
<b>1.4 Ghz AMD T-Bird underclocked to 1 Ghz...just to be safe!</b>