"Show Paste Options button" disable upon Setup of Office 2003

I know you can manually go into Excel 2003 and uncheck this button so that
the annoying clipboard does not show up when you copy and paste.

However, I am not seeing this option in step 10 of 24 in the Custom
Installation Wizard. I am trying to use that to create a custom MST file to
disable this. Otherwise, the custom MST file works and I plan to push it out
via Group Policy in AD.

Has anyone figured out a way to disable this feature upon setup? I don't
want to manually do this for all 500 plus users on each workstation.

Thanks in advance!