Site header...

I named my site bobo with a site description as blah,blah,blah (not really, but let say I did.)
so on my site header I get a
BOBO
Blah,blah,blah

then I go in the Administration Panel
-Then in the General Admin
-Then in the Headers
and then I pressed on NO for the''Display Forum Title''
That's all fine,BOBO is gone.How do I get rid of the Blah,Blah,Blah(site description)???
With a bit more info ,I have a 600x123 LOGO
What else can I tell you??

PS,Yes I did go at the FAQ on both sites.

For the forum description, you leave it blank in you Admin Panel > General Admin > Configuration.

D'oh!!
Thanks.