How to modify registry key control?

Problem is only administrator can install/run this
software correctly. In order to fix so all users can run
the program, vendor says to give the EVERYONE
group the following rights:

MODIFY for c:\documents and settings\all users\application
data\broderbund software

MODIFY for c:\program files\broderbund\calendar creator

FULL CONTROL for the following registry key:
HKEY_LOCAL>MACHINE\Software\Broderbund Software\Print

How do I do the last part - the registry change?

thanks ... riggsj