Read the manual

or select "Modem Play help" from the Info menu

Summary help

1-make sure setup is correct

  a-modem type selected correctly
  b-matching modem speeds
  c-one set for Originate &
     one set for Answer

2-One player call the other
3-Agree on Setup
4-Hangup phones
5-Click on "Click to Connect" box
6-If in Answer mode wait for ring
7-If in Originate enter phone # when asked to-Then press RETURN
8-Enter your name when asked to then press RETURN
9-Game should start up within a few seconds
10-Have fun!!!

Press F1 to enter a message to send
- then press return to send

If you click to soon - press F5 to get back to "Click to Connect"

If you are taking a long time to make your move press the Space Bar to let your opponent know  you are still there!