Bugs Fixed:

Fixed the cant re declare fatal error bug
Fixed bug where redirects to payment for every type.
Fixed the delete ticket problem with some physically attractive AJAX.
Made a better check_email function, validEmail. validEmail is included in includes/class_main.php so it can be used just about anywhere. validEmail does not use the deprecated ereg function. (PHP 5.3 support)
Fixed two things. If a username is over eight characters then it is considered invalid. Also, anything put in the username field is automatically converted to lowercase.
THT will no longer accept usernames that begin with a number.
Fixed bug described here: http://thehostingtool.com/forum/thread-423.html
Fixed bug in footer as described here: http://thehostingtool.com/forum/thread-395.html

Features / Enhancements:

Updated order form message when paid completed
Order Form now redirects straight to payment once completed
Updated compiler.php and info.tpl with some update information.
Added Drupal P2H support!
Changed invoices box in client area to look nicer. More JS.
Fixed a notice here and there. Gave compiler.php a new checkForDependencies function that runs at the beginning of every load and checks for basic functions that it needs. Such as MySQL and cURL. More to be added as needed.
Added tool tip about keeping the username under 8 characters.
Upgraded jquery.js to jQuery 1.4. It doesn't seem to have broken anything after some basic testing.
Staff can change a client's cPanel account password
Changed XML-API folder to API and added a readme.