>I currently have an app that uses a class using
>OLEObject = C:\WINDOWS\SYSTEM\MSCOMM32.OCX
>This requires that the com port be a number, thus be connected to the client computer.
>Can someone let me know how to use a modem on a network, as well as a function such as APRINTERS that lets you know all the available modems/com ports?

In general you'll need a redirector - software that intercepts COM port requests and re-routes them (e.g. over a LAN via TCP/IP) to a "modem server". There's no standard for doing this so enumeration of available modems, whether they are in use by someone else or not etc. will depend on any utilities provided by the redirector vendor.

A search on Google for "modem redirector" made a number of hits e.g. http://www.tactical-sw.com/default.asp

Searching on "modem pooling" will also probably be worthwhile. A few years back a client of mine made good use of WinPort http://www.faxport.com/winportp.html