NOOB Question relating to navigation through the file system

[bigbadjimmyp]

Hi all!
As I am a tolal novice, I am finding it difficult to point the style sheet logo bit (at the head of the page)to the images that I have uploaded.
This is mainly due to my ignorance,. I cannot seem to locate a file structure so as I can insert the proper path........how do I get to see the back end file tree?
Does this make any sense?
Help please!

Cheers! BBJP

[RonnyK]

It is in the CSS (called stylesheets), where the stylesheet name equals the name of the template used. There is a div#header where the default image is linked, change that link to your own, starting with "uploads/....".

Ronny