You’ll have to upload this via your Control Panel, it can be called: CPANEL or what not. Or, you could use a FTP client.
Find out from you host, what your F.T.P. URL/IP address is, username and password is then, if you don’t already know it.. =P Login to whatever F.T.P. client you use, and upload that logo to that theme’s folder then.
If you don’t have an images/ folder, does it have an img/ folder? If not, then upload it right inside the theme’s folder itself..
wp-content/themes/your-theme/
logo.[whatever extension]
header.php
index.php
style.css
whatever else..
Do what jackosh said above too though, just change the url as such:
background:url(logo.jpg) 0 0 no-repeat color;
Or whatever the image’s extension is..
Good Luck! ??
spencerp