>The Dialup Networking dialogue box keeps appearing unexpectedly on my screen. I have tried all the usual methods to try to stop this, without success. Can anyone help to me rectify this, so that the dialogue box appears only when I want it to?
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>Many thanks.

Have you recently installed Visual Studio 6? If so you probably need to change your HKEY_LOCAL_MACHINE\Software\OLE\EnableRemoteConnect key in your registry to be "N" not "Y".