joomla virtumart project, correct some errors (mainly on the check out page)

1. one page check out page, when reflesh the page, some pictures would be broken. 2. Change the tax rate for the shipping fee 3. SSL issue, SSL doesnt work, I have asked godaddy, waiting for the answers. 4. change some text and set the normal shipping to be default shipping method. 5. I found 1000 page with errors, with google webmaster, please delete. 6. show no stocks if the customer buy more than stock in the check out page. [login to view URL] this problem which happen after check [login to view URL] error: Cannot redeclare class PHPMailer in /home/content/95/10555295/html/libraries/phpmailer/[login to view URL] on line 34 Most important, Dont lead the system to more errors during the project. Dont bring any more problems