Direct-dialup Dcom connection fires ISP dialup too

Hi, I am using a direct call to dialup my dcom server (using Windows dialup
networking). Server is Win98, client may be Win95 or Win98. Once the dcom
process is finished and closed, the client starts dialing my ISP (Freeserve,
or another, depending what is on the machine). Something to do with the dcom
connection not being closed properly/fully at the client end? It never tries
to use the server dialup, always the ISP.
Any quick ideas before I post code etc?