Could the GLIDOS install instructions for Tombraider include and note about installing Unfinished Business? In the note what files are required and where to download them would be nice. However, what is critical is that you mention that if they do not have the Tombraider Gold CD-ROM, then that the following in the Glide.ini file under Unfinished Business be deleted:

CDCheckFile: data\End2.phd

If not deleted, then when Glidos launches Unfinished Business an error message informing them that the application cannot find the CD. The workaround that Glidos provides does not work. Deleting the line in the Glide.ini file does.