The activeCollab Timer .INI file is used to store preferences for some advanced settings in the application. In fact, some settings in activeCollab Timer can be changed only by updating this file.
The location of the .INI file depends on the operating system you are using. Here where you can find it:
Windows XP: C:\Documents and Settings\USERNAME\Local Settings\Application Data\A51\activeCollabTimer\
Windows Vista, Windows 7: C:\Users\USERNAME\AppData\Local\A51\activCollabTimer\
To access this file you need to enable the option to see hidden files in your Windows setup.
In the following articles you can find out more and learn how to change each of the settings in the .INI file.