internet disconnect solved

Hi All
I wrote an app to use at work on a standalone w98 pc. The app allows multiple users individual access to internet via a single user ISP (using the ISP's DUN application). My app logs all internet usage, and reports can be printed.
Long have I searched for code to disconnect when my app is closed, but no success. The RAS way didn't work, and closing ports seemed too difficult.:confused:
Al last while looking at processes using Process Viewer, I had a !! idea! Just use kill to close rnaapp.exe and tapisrv.exe and you will have disconnected!
Hope this helps all those with same problem.
:D :cool: