The move was no trouble and simple except of one problem. I originally moved the files as is to OpenBSD, but the web site at times referred to files using different cases and those references failed, and since IIS ignores the case in filenames there was no problem.
I then lower cased all the file names on OpenBSD, and made all the references consistently use the lower case name. This fixed the problem with use of the web site, but there is still the problem of external references that have saved URL's with differing cases. I could figure out no way to convert the names using HTTPD. My interim mitigation is to create multiple copies of the most used files with case distinctions in the web site, the files just redirect to the lower case versions. It would be nice if httpd could be used to convert or ignore case in URL's.
