I followed Aaron's suggestion and tried Pivot, but ran into a few problems, thanks to Aaron  

  with a few suggestions and remarks, I got it running at end, but got stuck definietly:
* As said, some files have multiple dots in a filename, that cause all dots but the last to be converted to understore when uing UNZIP, so you will need to chack all files for such references: .inc., .class., .html., .php.   and some more.
Using JAVA to extract the files will store them as STREAM_LF files, but you won't need to change any source.
* There seems to be a problem with MOD_PHP and Apache 1.3-1 causing access violations so the apllication will not be usable. You may be able to create a login, but any other next access will cause MOD_PHP to ACCVIO or run intoi another error (see apache$$*.log) so the application seems unusable.   
 
I would try it with Apache 2.0 on another machine but that runs VMS 8.2 and Apache 2.0 fails to start. (Obviously since 7.3-2 is the last VMS version it will run on). I may install 7.3-2 on that box as well and rerty, but actually I'm waiting for Apache 2.1 to be released....