User Rights with Legacy Applications

Hi there,
I’m running a system with Small Business Server 2000 (SP1a) and Win2000 (SP4) clients but am experiencing annoying problems with the older apps such as Corel WP Suite 8. Clients belonging to “Domain Users” group cannot start any of the apps in the suite without fatal errors. Unfortunately these apps need to stay so I need to find a way to assign sufficient priviliges for the programs to function without resorting to adding users to the “Domain Admin” group. I’ve explored GP at OU level as well at the Domain level but can’t seem to find anything of use. Anyone have any ideas?