Hopefully somebody with more knowledge about this will help you, but I'll give you my own small bit of amateurish advice in the mean time.... It might help...
If you've bought or downloaded a template for free (I'm just assuming you didn't make it from scratch) you would have downloaded a folder containing everything you need for that template. Within that folder, there should be a sub-folder, called images or pictures or something like that.
The first thing to do is put the new image you want to use into that folder.
Then open your template in Dreamweaver.
Go to your css folder (again, just assuming it's css)
Find the old picture in the header you want to get rid of (it'll be called image.jpg or something.)
Type in the name of the new image in it's place (the one you've just put in the images sub-folder).
And everything should be ok
... but that's assuming a lot of things... Try it out and if you have any difficulties ask me again... Like I said, maybe someone with more knowledge of Dreamweaver and this general sort of thing may be better equipped to help you.
~~SB16
Actually, just thinking again, you could edit the original header in Photoshop, in the usual way. That image would be located in the images sub-folder.... I think this might be a much simpler method...
~~SB16
Last edited by ShakespearesBrother16; 06-17-2009 at 06:19 AM.
"I have spread my dreams under your feet; Tread softly because you tread on my dreams."