Looks like i am having a conversation with myself...that's OK!
I was testing out the possibility of autodetecting the language...a colleague in Mexico appears to have an English installation! The problem with asking the user to select a langauge is that it has to be done every time excel is launched...I know i could write a registry value or something like that to have it "remember" the setting, but i would like to avoid doing that...
this just gave me a thought; i could write the value to a worksheet within the xla...
ANYWAY, i put together all of the language codes in the attached sheet, and three different ways of obtaining them via VBA. Right now when you open the file, it will tell you the results of the three methods (IDUI, IDInstall, and IDHelp). I found it helpful, so I thought I would share...