Horizon,
In the AutoCAD Electrical 2006 Help, review the Advanced Productivity topic called 'Showing source and destination markers on cable wires.' This deals with Fan In/Out.
*Edited to say that I just noticed that you have 2005 installed. I'll create a PDF of the file and attach later this morning.*
Hope this helps!
Heather Schwartz
Autodesk/ AutoCAD Electrical DSS