Worth a try...
OPEN: /emsu/install/do_install.php
FIND: (~line 96)
mysql_query("CREATE TABLE IF NOT EXISTS useraccounts ( id int(11) NOT NULL auto_increment, username varchar(20) NOT NULL default '', password varchar(20) NOT NULL default '', activated int(11) NOT NULL default '', altemail varchar(50) NOT NULL default '', fname varchar(20) NOT NULL default '', lname varchar(20) NOT NULL default '', securityquestion varchar(50) NOT NULL default '', securityanswer varchar(50) NOT NULL default '', ip varchar(16) NOT NULL default '', timestamp varchar(37) NOT NULL default '', quota int(11) NOT NULL default '', PRIMARY KEY (`id`))") or die(mysql_error());
REPLACE WITH:
mysql_query("CREATE TABLE IF NOT EXISTS useraccounts ( id int(11) NOT NULL auto_increment, username varchar(20) NOT NULL default '', password varchar(20) NOT NULL default '', activated int(11) NOT NULL default '0', altemail varchar(50) NOT NULL default '', fname varchar(20) NOT NULL default '', lname varchar(20) NOT NULL default '', securityquestion varchar(50) NOT NULL default '', securityanswer varchar(50) NOT NULL default '', ip varchar(16) NOT NULL default '', timestamp varchar(37) NOT NULL default '', quota int(11) NOT NULL default '0', PRIMARY KEY (`id`))") or die(mysql_error());
SAVE FILE
Try running the installer again and report back, if you still have problems can you post your server's versions of php and mysql?
gl