If your QuickContact or QuickDay items don't appear in the menubar, try the following:
1. In the Finder, go to the /Applications/Now X folder.
2. Control click on Now X.app and choose "Show Package Contents".
3. Go into the resulting Contents folder, and then into the MenuExtras folder.
4. Double-click on CalendarMenuExtra.menu and ContactMenuExtra.menu.
At that point they will be launched and should appear in the menubar.
NOTE: this is a workaround for a bug in PB1. It will be fixed in an upcoming beta.