Local user Rights

Use regmon and filemon from www.sysinternals.com and try to get the files and keys the application tries to read or modify.

Then modify the NTFS ACLs or the Registry ACLs (regedt32). If you have to do it automatically use regini for patching the Registry.

It might be because the users do not have full access to the folder.

One thing you could try is to change the folder permissions, and give the users full access to that folder, where the training programs are.

Use windows explorer,
Right click the folder,
Choose Properties,
Then Security tab.

The Users group cannot run many apps written for prior versions of windows due to xp security. You have a couple of options to allow them to do so by elevating the users security settings. Here's a link to an article describing the issue and the solutions:

http://www.kellys-korner-xp.com/xp_groups.htm

Cheers.

RW