Saving User Preferences

I am writing a piece of software in VB .NET 2002 and I need to save user settings. I want the settings to be accessible (read) by any account (Administrator -> Guest). I do not need all accounts to be able to modify the preferences. I have tried the Registry but only certain users can access the variables. I have used .txt/.dat/.xml files in the and the C:\Documents and Settings\All Users\Application Data\MYCOMPANY\MYSOFTWARE\     folder but the files cannot be read by all users. I can make it so that each users had their own preferences but I do not want to do that.

Any advice would be great.

Thanks