The new Visual Studio 2010 help system is missing index and full TOC. Transition from old good HTML help to new Web Browser Based Approach thing is painful, but the inability to search using index made this thing unusable.
Currently there are three options:
- Wait for Visual Studio 2010 SP1 or longer (Microsoft is going to fix this, hopefully)
- Use external program called MS Help 3 Viewer from The Helpware Group
- Use VS2010 plug-in / addon / extension HelpViewerKeywordIndex created by Ryan Linton. Here are installation instructions with screenshots
All three options are currently free.