Once the hot fix is installed, reinstalling the font after the fact doesn't work. This leads me to believe the hot fix only works when the original fonts are in the system at the time it's installed. Still no bold showing up in the list even after again deleting all the AdobeFnt10.lst files. Thinking reinstalling the original version would get it back, I had a friend send me the 2.37 version of Arial Narrow Bold and installed it over the older version. I reopened InDesign and low and behold, all Arial Narrow fonts were in the list.except bold, the one I'd replaced. I then read about the hot fix, so downloaded it and installed it as well as deleting all the AdobeFnt10.lst files on my system. Well, it didn't work and after reopening InDesign, Arial Narrow Bold was still not in the list. Normally, I back up any files/fonts I'll be overwriting but didn't do it this time (old age setting in). So I chose Arial Narrow Bold and installed the older version (v2.30) over the newer version (v2.37).
I have a CD of fonts I copied from my previous system that has an older version of the Arial Narrow family than currently on my new system, so as a test I decided to install just one and see if it works. I did some online research and read something about older versions of Arial Narrow fonts would fix the problem.
As many others here have experienced, when I went to Vista Home Premium on a new system and running Office 2007, the only Arial Narrow font showing up in InDesign CS2 was regular.