You can also highlight an icon and select hide if you don't want it to show, but you also don't want to delete it. This works well for some icons that pop back up after a reboot, like the VCast Music| Rhapsody icon. Even if you remove it from your service book it will still pop back up from time to time. I just hide it and I never see it again.
i was just thinking...i wonder if you can hide all your icons. and if yes, will it show any on the main screen?
i'm not gonna bother trying it cause it would be stupid, but i wonder...