OphelliaPayne,
Your solution of removing the <center> tag and using align="center" is not correct. And like others have stated, you should be using CSS to fix this problem, not deprecated HTML. Remove the align attribute and the center tags you've added.
Go to skin1/customer/main/home.tpl
After the <body> tag add <div id="envelope">
Before the closing </body> tag add </div>
Add the following to your CSS file skin1.css
Code:
body {
text-align: center;
}
#envelope {
text-align: left;
margin: 0 auto;
}
When you view the source, there should be a <div id="envelope"> ... </div> wrapping the contents of the page just inside of the body tag.