how to make banner in side logo

[geevest.com]

friend i have forum using new style
but now i want make 1logo + advertise banner.
sample in attachment.

this is script logo and i input this script <red> in in header :

<!-- logo --><a href="http://www.siteadvertise.com"><img src="http://www.sitename.com/advertise.gif" /></a>
</div>
but now my logo and advertise banner is broken,image advertise and logo no fixed.

anyone can help me? i want make logo and advertise banner.

[SEOvB]

did you upload advertise.gif to the correct folder

[geevest.com]

yes sure friend,but advertise banner not fixed in side logo.
i dont know why.maybe my script is wrong

[ndut]

is this the same question, if i want to put 2 image for banner, side by side??
anybody can help? thanks