I may not fully understand the question either, but here are two ideas.
1. In your My Documents folder, create shortcuts to the folders on the network drive. You may want to place these shortcuts in their own folder, e.g. "LabViewDrivers" or "__LabViewDrivers" if you want it to show up at the top of a name-sorted list. When you go to Select a VI, there's an icon bar on the left with My Documents on it, so it's always easy to get to My Documents. Then the shortcuts will save you some tree navigation.
2. Create folder shortcuts in the user.lib folder (C:\Program Files\National Instruments\LabVIEW 6.1\user.lib). Next time you start LabView, when you go to the User Libraries palette, you'll have an icon for the shortcut (.lnk file) and you can browse to anything
below that.