Frank had also wondered about how to do this, so I found DKToday via his blog.

I then got a bit annoyed that I was getting all these pop-up notifications about what cell I was in.

Further down in the comments of Frank's post, there's a link to an article by Nick Randolph about how you can edit the registry on your Pocket PC device to tell it to not cause the cell name broadcasts to be turned into pop-up notifications.

I might see if I can write my own applet, as DKToday does seem a bit buggy.