ok, I want to integrate 2 or more, (I think only 2) coppermines galleries into a HTML webpage, of course php is needed to do the thing I want to; if you login into one, you enter to the 2, can it be???
Use the same cookie names for both installs, and change $CONFIG['TABLE_USERS'] = $CONFIG['TABLE_PREFIX']."users"; in installation A to point to the user table of installation B.
Just a guess.
erm, one single html page can only hold one or more coppermine galleries if you use frames (or <iframe>), which is not recommended, as it has lot's of drawbacks. There's a space issue as well, since you can't tell in advance what resolution your visitors will have.
GauGau