Don't want your mobile to connect to GPRS all the time?
I've found this seems to be a common issue...
When someone's on Windows Mobile (either 2003 or 5.0), they're happily disconnected, but then they open something that wants an internet connection. Suddenly they see a "connecting to GPRS" box, and they freak out because they don't want to pay the GPRS prices for downloads.
Here's how to avoid it.
Go into Settings. Connections tab, Connections icon (use the links for images - apologies to the people who are hosting them!). Then go to the Advanced tab, where there are three buttons. Pick "Select Networks". Then change the "Programs that automatically connect..." boxes to something other than GPRS.
You can still connect to GPRS by going into the Wireless Manager and turning it on. But now your phone won't use GPRS unless you specifically tell it to. Which should keep your mind at ease.