Well, unfortunately, it sounds like you can't! :(

Not sure how this happened, but I fired up VS.NET a couple days ago, only to find out my custom toolbars and keyboard shortcut key assignments were all gone!??

I've tried to find this before without success. Filemon, RegMon spew out so much data just for devenv.exe that it's like finding a needle in a haystack.

The good news - apparently in VS.NET 2005, exporting custom settings is supported.

This search turned up some info from some MS dudes that tried for weeks to figure out where the settings are saved. Apparently, not possible - quote from ms devs.

One little tidbit, the file for the toolbar customizations (apparently based on Office toolbar technology) is possibly stored in
<docs and settings user profile>\Application Data\Microsoft\VisualStudio\7.1\1033\CmdUI.PRF

This is a binary file, so not easy to understand, but did confirm that it changes when I tweak a toolbar in VS.NET. :)