MS Office Pro 2003 – excel help

We are using active directory in Windows 2000 and have a policy setup to only allow the applications within the list to open. When using help in MS Excel help, it says that the operation was unsuccessful due to a program name not being in our list. My question is, does anybody know the filenames that Microsoft uses for the help files. The regular help works however the demos and articles under help will not. Any suggestions?