To accomplish this with the latest PDFCreator version, follow these steps:
- open PDFCreator
- go to the Profiles tab
- select the "Default profile" or the Profile you want to modify
- in the "Actions" section, the "Send" bar should say "Open File: Use windows default viewer"
- hovering the mouse pointer on that bar, a trash icon should appear on the right
- use the trash icon to delete the "Send" action
- click the Save button
Use that modified profile to print to PDFCreator.