Hi Michele,
Sorry about the delay. You can cut and paste folders (Options -> Cut this item, navigate to where you'd like to place the item and select Options -> Paste this item).
As for summarizing all tasks in one master Gantt chart, you can following the instructions outlined here (substituting Projects for Calendars):
http://my.sosius.com/sosius/help/forums/general_help/2008-09-08_17-30-22-83_542/2008-09-09_06-57-44-72_219
Kind regards,
Michael
Sosius Customer Service