MrME,
Try going to "Tools" (on the main menu) - then "Options".
Under "Workspace", click on "General", and you should then notice "Undo levels". Change the number to suit your needs.
My version of Corel here at work is version 8, so there might be a slight difference in the positioning of the "Undo levels" in the "menu tree" structure.
Regards, ...Dale Watson dwatson@bsi.gov.mb.ca