leased line connection using Windows NT

I’ve closed this thread by mistake.
I’m trying to setup a leased line connection between two NT workstations. I’ve used Dial-up networking with a ‘PC to PC direct connection’ modem. The problem is that I can’t find where to instruct win NT that this is a permanant connection and it shouldn’t dial a phone number. I found out somewhere taht I should check the ‘persistant connection’ checkbox but I can’t find it anywhere. I’d appreciate any comments or advise that you can offer.