Yes, I use dial up and broadband simulataneously everyday. The carrier I was using for my dsl was unable to provide me with two accounts for simultaneous use, so I had to get a separate dial up account with another carrier. This is unlimited time for $9.00 a month (AUD) but ofcourse each time you connect costs, so if you want to run multiple accounts this way it soon adds up. If you go this way, don't forget to "disable" your wifi or ethernet connection before dialing up each time. If the line drops out on your dial up, you will be disconnected rather than default to your dsl account midway through a listing or whatever.
I was trying to dial up over voip (not the other way around) to save the on call cost each time, but the codec was not strong enough to support it, but i have read in some forums some people are successful with this. That would be the ultimate.
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