toyota 850 connection help

I recently bought a used Toyota 850. I am new to this type of machine, was running a Meistergram 800. This machine has stitch pro 2004 software (data stitch) and I need a walk thru on how to send a design from my PC to the embroidery machine, I keep getting a "Connection Error". Can someone help me?
Thank you
Carol
:(

Location: 
United States