I'm going to need more information to help you here. I realize some of the questions are redundant, but please bear with me:

1. What make, model, and speed of modem are you using?
2. Internal, external, or PCMCIA?
3. What is your operating system Windows 3.x, MacOS, or Win95?
4. Which version of the Mindspring software are you using?
5. Processor speed (for PC's) or model (Mac) and RAM?
6. What initialization string are you using?
7. What telephone number are you dialing?
8. Where do you live (city, state)?
9. What is the phone number you are dialing from?
10. Is there any history of this problem?
11. Are you running any Fax software?
12. What speed is your UART chip (8250 or 16550x)? Windows 3.x users only:
13. If you have a 16550x UART, is it enabled in your system.ini file?
14. What communications driver are you using in Windows? Mac users only:
15. Does your modem cable support hardware handshaking? All users:
16. Do you have ANY other software running? Especially virus-detection software, fax programs, or diagnostic TSRs? If so, what are they?

I'm entering you in the call tracking database to have a tech call you, but having this information handy will help!