Look under My Documents/VST Presets.
On Win 7 My Documents can usually be found under Users/Your User Name/Documents,
but if your smart you would move it to a different drive to make rebuilds a lot less stressful.
Simply right click on Documents, select the location Tab and Move.
Simple.
It’s interesting because my vsti presets were in this folder but I had instrument track presets in another folder …AppData/Roaming/… (something like that, can’t remember exactly)
I agree with you about having it on a different drive. I wish you could specify were you want this stored and have it in a location that makes sense. Having to Windows search files just to find out were Cubase decided to put stuff is a little crazy. Seems like you should have a preference setting where you can tell it where you want things stored.
Yeh had the same problem with my HALion content recently, as I run a small SSD drive as my C drive I managed to fill the thing with sample content that good old Steiny wants to put on the C drive. managed to get round it by creating shortcuts to alternative drive where I copied the content too, see image. This may help others…