Windell,
If you have checked dotLRN and OpenACS out from CVS Head (see https://openacs.org/projects/dotlrn/dotlrn-doc/dotlrn-installation for instructions), you should have a "Change Locale" link at the bottom of dotLRN pages. If not, you probably have dotLRN 1.0.
The "Manage internationalization" link is in the page where you get when you click a particular package name in the APM front page. It's a fairly new addition, I don't seem to have that link in one of my oacs instances which I haven't updated recently.
Remember that the changes you make in the translation server won't get to CVS until someone (=Peter) commits the message catalogs.