[MarkJ]

I have a Performa 1800(OS 8.6)and a 28.8 internal modem which would occasionally be used to check e-mail. I cannot connect to my ISP(Concentric). I am unable to connect to the server. Concentric tech support which is usually very good said that they can give me the connect commands but they don't know where the files are on a MAC. I have not had any luck looking for a user modifiable modem file.
When using the modem as a fax it work fine and my other Macs with faster modems work also work well.

[wlonh]

ok, modem scripts are to be found in the Modem Scripts folder in your Extensions folder.

they can be opened using BBEdit lite and can be then modified using BBEdit lite to your needs by judiciously entering the initialization string that your ISP recommends into the proper field.

BBEdit lite: HERE

in the iMac forum, there are several posts on modem script issues and much info can be had... in particular, see the Apple TIL article URL's i posted.

in no particular order:
http://forums.macnn.com/cgi-bin/Forum5/HTML/001583.html
http://forums.macnn.com/cgi-bin/Forum5/HTML/001691.html
http://forums.macnn.com/cgi-bin/Forum5/HTML/001734.html