I had the same situation. I tried manually adding the Build dropdown
back to the toolbar. I eventually had to do what is described in the
link I posted that you say does not help.
When I installed VS2005 I asked to setup the Visual Basic development
environment not knowing all of the ramifications, one of which is there
is no Build type selector dropdown on the toolbar. I was able to
restore my environment by following the instructions in that link,
notably:
Tools, Import and Export Settings
Choose Restore all settings
Save your current settings if desired
Choose General Development Settings and Finish.