I'm on bluehot, and my website is giving many cpu and mysql exceeds usage fo errors of old vesion, could you help me to adjust it?

modified files:
config.php configuration
job-details.tpl Apply translated
translations.ini translation in italian
class.postman.php emails translated
footer.tpl added code of google of google stats and 2 translated lines
sidebar.tpl adding adv google
screen.css changed name of logo from gif to png
publish-write.tpl to add double check box for privacy on the bottom
page_activate.php overwrite line 4 with this: if ((isset($_SESSION['later_edit']) && $_SESSION['later_edit'] == $j->GetAuth()) || ($extra != '' && $extra == $j->GetAuth()))

ho much do you need for it? be cheap please
theweb site is: www.lavorohotel.net