The Panasonic package is complete (not just an updater). The installer "hack" works although it will be extracted to whatever your temp folder is set to, not necessarily under Documents and Settings. Also, perhaps it may be possible to simply edit the ini in the temp without repacking? But it is nice to prepare a universal archive. I would just recommend creating a copy of the Disk1 folder after it is moved, editing the copy and then moving those changed files to overwrite the originals. Otherwise, all the cab files will be extracted to the same folder and make a mess (presumably a different folder could be specified but I didn't bother checking as the copy method was simple).
UDF 2.60 was recently added to InCD, but Matsushita is still stuck back on 2.00!