Date index for Apr 2002

I just set up my system to run achievo 0.8.  I've set up php (v 4.1.2),
apache 1.3.24 and mysql (latest version).  I've set up the database on
mysql.  When I go to the index.php page (BTW: I've seen posts about *.php3
files.  Have these been changed in newer versions?), I get a whole bunch of
warnings.  It starts off like this...

Warning: Call-time pass-by-reference has been deprecated - argument passed
by value; If you would like to pass it by reference, modify the declaration
of [runtime function name](). If you would like to enable call-time
pass-by-reference, you can set allow_call_time_pass_reference to true in
your INI file. However, future versions may not support this any longer. in
c:\apps\achievo\atk\class.atknode.inc on line 490

several of those appear, then follows some "headers already sent" messages.
I assume the warning dump causes these...

Warning: Cannot send session cookie - headers already sent by (output
started at c:\apps\achievo\atk\class.atknode.inc:490) in
c:\apps\achievo\atk\session\class.atksessionmanager.inc on line 14

Several more follow.  Finally it says 'Login failed'.  Any help would be
most appreciated.  I don't even know where to start on this one.

Thanks in advance,
-Kevin Galligan