I remember trying all sorts of things to transfer my Atari 8-bit material to my PC. The only way I was successfully able to do it (if I remember correctly) was to connect my Atari modem to the phone jack and my PC modem to another phone jack. Sounds stupid, but hey, it worked. I didn't have to dial any number, but do some sort of direct connection. I had sold my 850 interface back then so the only modem I could use was by good old XM301 (300 bauds) modem. That took a while :)
I don't exactly remember the software used though. That was like 10 years ago.
