[out-of-character mode on]
"Manuals sux they don't tell you everything there is about a subject, but they only tell what the writer thinks he knows about the subject."
lol yeah, those manual writers don't know anything about PHP do they, they just wrote it that's all. (get the sarcastic hint?)
"just set register_globals=on in your php.ini file"
that has d*ck-all to with the session_id, read the manual.
"If this doesn't work please check if your php is compiled with --enable-trans-sid (normally it is)."
Normally it isn't because trans-id neither nor desirable reliable, read the manual.
"Last option is as vincent tells to send your session id manually with every script in this case your current session id is know as SID"
What about using cookies to transport the sessionid? oh right, that was explained in the manual so it must be wrong eh?
Next time, if you want to be a 'knowitall' smartass, at least get your facts straight.
Maybe the manual is not such a bad place to get info about PHP after all?
[out-of-character mode off]