From that site's faq:
Quote:
5.4 Why aren't there any new 10.20 or 11.00 binary depot packages?
Operating systems prior to HP-UX 11.11 are no longer supported by us as of September 2004 onwards. No new 10.20 or 11.00 binary depot packages will be put on this site from now on and existing 10.20 or 11.00 binary depot packages will gradually be phased out as new versions of packages replace older ones.
Sorry, but 10.20 has been obsolete for years.