Outlook Express Protector 2.093
Control access to Outlook Express and its e-mail and address data bases with Outlook Express Protector. When it is active, no programs can get access to the files and nobody can steal or spoil your data. When you try to start Outlook Express or open Address Book, the program requests you to enter a password to grant access. If a user does not enter a valid password or cancels the authentication dialog box, OE will not be opened.

Outlook Express Security 2.07
Use Outlook Express Security to control access to Outlook Express and its databases. When it is active, Outlook Express becomes locked and no third-party programs can access its message base files and the address book. As a result, when you try to start Outlook Express, open the address book or access the files, a password will be asked to allow access. If an invalid password is entered, Outlook Express or Address Book will not be opened.

Program Lock Pro 2.13d
Lock and unlock any program on your pc, including IE, Outlook, AOL, AIM, and more. You can even lock your control panel with one button click. Other features include the ability to choose your own message to display if anyone attempts to run one of your locked programs, and also includes password protection so only you can unlock the program when you are ready to use it. Allows the entire PC to remain active and running.

Lockdown Plus PC 4.0.381
Lockdown Plus PC is a network based desktop security solution for publicly accessible computers running the Windows 2000/XP/Server 2003 Operating Systems. It prevents users from deleting critical files and applications, restricts use of external drives, and disallows unauthorized changes, whether accidental or malicious, to the Windows system.