Can someone give me step by step directions on how I could limit a user's permissions to ONLY allow Internet Explorer and Microsoft Word to run (as well as the necessary Windows processes).

I know this may involve the use of 3rd party software but I would prefer to create these limitations through group policy editor ONLY.

Please do not tell me to switch to a Linux based operating system as it is not an option and do not give information that you do not know to be 100% accurate. Thank you.

Windows XP Professional SP2.
1 Administrator account, 1 Debugger/Adminstrator account, 5 normal user accounts.