WAMP, WordPress and Dreamwever CS5

Hi,

New to wordpress so please bear with me. Apologies if this is a repeated forum question too.

I am using WAMP as a testing server and Dreamweaver CS5 as a text-editor to manipulate the theme files.

I have successfully set up a live local connection between WAMP, WP and DW and can view the live index.php file from the wp-admin folder after using the ‘discover’ the dynamic files on dreamweaver.

My problem is that if I select the index.php files in the themes folder, I get the following error message and the link is broken:

Fatal error: Call to undefined function get_header in C:\WAMP\www\wordpress\wp-content\themes\twentyeleven\index.php on line 1

Is this because the activated theme is already being displayed dynamically in the wp-admin folder, and I am causing a conflict by going directly to the themes to edit the files?

Would be grateful for some feedback.