Rss Feed Problem

Can anyone tell me why my rss feed is returning this error message and what I can do to correct it ?

Warning: Cannot modify header information – headers already sent by (output started at /home/breezie/public_html/ffblog/wp-blog-header.php:9) in /home/breezie/public_html/ffblog/wp-rss2.php on line 8
http://forumfinder.net/ffblog Thu, 31 May 2007 13:39:14 +0000 http://wordpress.org/?v=2.1.2 en http://forumfinder.net/ffblog/?p=64 http://forumfinder.net/ffblog/?p=64#comments Thu, 31 May 2007 13:38:41 +0000 breezie http://forumfinder.net/ffblog/?p=64 http://forumfinder.net/ffblog/?feed=rss2&p=64 http://forumfinder.net/ffblog/?p=63 http://forumfinder.net/ffblog/?p=63#comments Thu, 31 May 2007 13:19:40 +0000 breezie http://forumfinder.net/ffblog/?p=63 http://forumfinder.net/ffblog/?feed=rss2&p=63 http://forumfinder.net/ffblog/?p=62 http://forumfinder.net/ffblog/?p=62#comments Thu, 31 May 2007 13:12:13 +0000 breezie http://forumfinder.net/ffblog/?p=62 http://forumfinder.net/ffblog/?feed=rss2&p=62 http://forumfinder.net/ffblog/?p=61 http://forumfinder.net/ffblog/?p=61#comments Wed, 30 May 2007 23:31:49 +0000 breezie http://forumfinder.net/ffblog/?p=61