BBScreen is great. I use a Sprint CDMA 7250. I needed to upgrade the OS to 4.0.2 to get BBScreen to work. Atleast I am on their EV-DO network now.
I have been using another BlackBerry screenshot tool besides the simulators and BBScreen. It's by Idokorro. This piece of software allows you to project your BlackBerry to your computer screen (and then to a projector if needed).
Great for demoing use of BlackBerry. www.idokorro.com/downloads/BBViewer.exe
FYI. Idokorro is making this available for free. It seems to work quite well if a bit slowly but it certainly beats people crowding around one BB. Just to set expectations, the viewer may miss some of your actions on the BB but will catch the next one so try again. Do not call Idokorro for support. This falls into the "it is what it is" category.