Hi,
will give it a go...
Guessing your banner requirement is probably 900x141. your current banner is 584x141.
Could you maybe add a small phrase or comment to go on the banner, it might help the layout. (eg. 'A forum for sharing recipes')
Regarding getting the banner up, i might not be able to help too much but i'll do my best.
so post back as soon as possible with a phrase/comment (if you want it) to go on the banner. and in the mean time ask for help on putting up a banner here..
http://fhq.forumer.com/ipb-general-support/
say you're getting a banner made and need help uploading it.
-uni