What files need to be edited to change the look of the page the representative sees?  For example: I want the representatives to see the first three colums as Ticket Date Invoice Number instead of Ticket Date Subject.   I already found how to add custom fields on the customer side.

thanks

The first page you see after logging into the system.

The default columns are:

  Ticket Date Subject Category Representative Priority From Status

I hope this clarifies my question.

Thanks,