Hi!
There is a co. out there that wrote them for NetJets. Cingular has a partnership with that co. and they may be writing stuff for Cingular that's available to their customers.
We are writing our own stuff internally. If you don't have a lot of money, the only way to do it is write them yourself. The Cingular rep told us that you can use Java, or another version of Java, to write the programs. Getting them into the BlackBerry itself, and into all the BBs in your organization is trickier.
CLiff
YIP