When you right click a msc file like devmgmt.msc (Device Manager), you can choose Author Mode which allows you to modify, add/remove snap-ins and save the file.
You can also open a msc file with the Command Line Parameter /a (Start -> Run... -> devmgmt.msc /a). This applies to all msc files.
In the Options menu (File --> Options) you can change the Icon, the Console mode & Save settings.
When you want the Device Manager to always show the 'Hidden Devices'; select View --> Show Hidden Devices and save the file.
Here is an example of adding snap-ins:
It's a modified compmgmt.msc file (Computer Management) -> added Local Computer Policy, Security Templates & Component Services.
» ModMSC.zip (16KB)
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