You can do it easily with stylesheets. The problem is that different browsers interpret and display the list items differently. Mozilla-based browsers display the indentation as padding, while Internet Explorer displays it as a margin (not sure what KHTML-based and other browser engines use). Therefore, to work in all browsers, you must set both style attributes. In your stylesheet, make up a style like this:
CODE
ul {
padding-left:0px;
margin-left:0px;
}
That will make the list have no indentation across browesrs (or it should, anyway).