Adding a line of code to all pages I have recently taken over the final stages of construction of 3 websites that were built in Drupal 7. I have never used drupal before and have run into a problem. My footer in one of the websites is not visible. This was due to the color style sheet not being pointed to in the page code. I copied the existing code into dreamweaver and resolved the issue, but cannot upload to the server as I cannot find the pages on the server, so i have no file i can replace.

The code looks like this:

@import url("themes/bartik/css/layoutb3ea.css?mry7g9");

@import url("themes/bartik/css/styleb3ea.css?mry7g9");

It needs to look tike this:

@import url("themes/bartik/css/layoutb3ea.css?mry7g9");

@import url("themes/bartik/css/styleb3ea.css?mry7g9");

@import url("sites/default/files/color/bartik-23dc1686/colors.css?m9ub8w");

You can see that the last line of code is missing.  I am used to working in dreamweaver and I am not familiar with the how the file system works in Drupal.

How do I add that line in to all the pages?
You should familiarize yourself with Drupal theming. Check out the Theming Guide.

Basically, you want to edit the CSS in the theme that's currently being used on your site.