I used to do the same thing. I used the Generic text only driver. You need to set your printer to this driver before creating your datawindow. You should see 3 print settings for Courier I believe, they are for 3 different settings (like 10cpi, 12 cpi). Use these to create your print output. Used the rulers to align your printout for either 6 or 8 lines per inch. You will have to setup print initialization commands in the text driver for each machine it will be used on. Get them from the printers manual.
Mike Kling