Ok, this is a continuation of the topic, "Installation on Unix" but since it's gotten a bit more specific to the installation, I moved it here. I looked through my hosts Plesk and found a log area that I'm hoping will determine where the problem is. Line 41 & 42 for MySQLDatabase.php seem to come up a few times. I'd really appreciate some guidance in my next step to fixing the installation. Thanks!
[Sat Nov 29 08:21:41 2008] [error] [client 216.113.194.164] PHP Warning: mysql_connect() [<a href='function.mysql-connect'>function.mysql-connect</a>]: Access denied for user 'tsc'@'localhost' (using password: NO) in /var/www/vhosts/tscnursery.com/httpdocs/sapphire/core/model/MySQLDatabase.php on line 41