gif logo in the header?

[yanref]

hope someone can help?

i want to change the main logo, i have a gif i want to use as you see from the image below!
i have worked out where to change the file name, in the stylevars, but it does not show the image?
any ideas.
http://graphicshost.co.uk/styles/nsvip/LOGO.gif

[Lynne]

If you change the stylevar to have the path to the new logo, then it should show up. Can we get a link to see this?