Thanks, Spencer.

I wasn't sure if the service book, which appeared to be for OS 4.x, would work with 3.8.

In any event, I did upgrade to 4.X. As a relative newcomer to all this, it was a total nightmare. But, thanks to this forum I perservered, got the damn OS to work correctly (after having to use another poster's wonderful program to wipe the whole thing clean), and was able to get the yahoo messenger to work without a flaw.

Now the question is how will it appear on my cingular bill!