knoppi/stanton.
Probably, it really doesn't matter if it is GPRS and CDMA. The existing Treo600 modem software appears to works on both GPRS and CDMA. It just takes advantage of the TCP/IP stack at the software level.
BlackberryModem would take care of the Blackberry <-> Internet by using the existing software capabilities of the Java operating system (i.e. J2ME socket functions). Which means it would work if there was BES/MDS or there is a TCP/IP stack. It should be doable at the software level, routing TCP/IP and UDP packets. (ICMP routing isn't critical -- ignoring this usually simply means you're unpingable)
So if someone wrote BlackberryModem, it would not matter what kind of Internet connection the handheld device has, as long as all the Java socket programming works properly.
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