Hehe.........I've hit a brick wall again!........

[Joe Forster/STA]

Hi Python007,

If I'm not mistaken, there are more CAB's, like data2.cab, data3.cab etc., CD-sized (?) volumes of a large archive. Changing one file would mean recompressing all files after it, including those in volumes with higher numbering. This is complicated and may not be implemented in CAB archivers.
A good idea might be extracting all files from all volumes and then recompessing them, either into multiple volumes or into a single volume. For the latter, you might have to hack the installer script (see "ORCA"; search for it on this forum or at the Micro$oft site). (No, I don't have this game; only speculating.) Good luck!