Speaking of Add New Search Locations...

Windows Desktop Search - Tech: Adding new search "locations" to Windows Desktop Search...

I’ve been hoping that someday I’d actually have a short post to make on my blog about something Windows Desktop Search (WDS) related… But today isn’t that day…

We’ve been hearing some requests that users would like to add new locations to the “All Locations” list in WDS.
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And to be honest the real request we heard was for info about adding new desktop search locations but since we support the adding of both desktop and web search locations to the list I thought I’d unofficially tell you how to add both. As usual this isn’t an officially supported feature and is likely to change in the future. But when it does change we’ll most likely have a UI for adding these things but for now you’ll have to add them manually via the registry. So as a further disclaimer, be comfortable with modifying your registry before making any of these changes. I’d also recommend you make a backup of your registry settings before making any modifications to them. ...

This post will walk you through adding additional search locations to WDS via reg hacking...

(Via Brandon Paddock's Blog - Steve blogs about how to add custom search locations to WDS