How can I call a script from another project in the same project suite? From another project suite, if possible?
Please see the "Calling Routines Declared in Another Project" help topic and the following TestComplete FAQ entry:
Does this help?
Andrew - AQA Support
this helps. thank you very much. another question though
If I use Add|Existing Item option, will this create a physical copy of the unit I added or is it just a link to that unit from another project?
It is a link, not another physical copy. Changes in the script will affect all projects immediately.