> OK so you're saying I misunderstood, I can't delete
> the old pages to make room for more.  Correct?
Sure you can, the're your files. You can even tell httrack not to redownload
locally erased files.
But you can't have it both ways, erase but redownload only on changes.

> What if I were to empty the files instead of
> deleting them (while preserving the created and
> modified date/time stamps on the files), does
> HTTrack check if the size changed as well? 
Version 3.32 and earlier used the time stamp and size of the files themselves.
3.4x, I believe, uses the time stamp out of the cache. Might work.