Unless you are using Skype (or a similar program) I would think you'd just
dial it the way you do any other phone number. At least that's the way my
VoIP phone works. Attach your modem to the VoIP input box using a standard
RJ-14 phone plug. Use a command button to dial the number. There is a wizard
that will generate the code for you when you place a command button on the
form (look under miscellaneous).
For Skype, you have a different problem. You can open Skype using the
ShellExecute API:
http://www.mvps.org/access/api/api0018.htm
but then you need to copy the phone number into memory and paste in the
appropriate place.
--
Arvin Meyer, MCP, MVP
Microsoft Access
Free Access downloads
http://www.datastrat.com
http://www.mvps.org/access