SIMS.ini is used be the Capita SIMS .net and related applications to store the file paths and settings used by the application and software updaters. It is always located in the C:\Windows folder. It can be edited in a text editor such as Notepad, but in order to save requires elevated permissions as the file is protected by UAC.
An example SIMS.INI from an External Connector workstation
[Setup] SIMSDirectory=C:\Support SIMS Directory=C:\Support SIMSDotNetDirectory=C:\Program Files (x86)\SIMS\SIMS .net SIMSSetupsDirectory=C:\Support
An example SIMS.INI (Cut down version)
[Setup] SIMSDirectory=F:\PUBLIC\SIMS SIMS Directory=F:\PUBLIC\SIMS SIMSDotNetDirectory=C:\Program Files (x86)\SIMS\SIMS .net SIMSSetupsDirectory=F:\PUBLIC\SIMS\Setups