editing main form..

well, first i had problems installing it but i fixed it. and im up to the point where i want to edit the advanced guest book itself by taking off the default images that are on it..like what it looks like and i want to change it to taste my needs, but i have a problem...when i try to erase the logo i want to erase it wont erase...is there more then one form i will have to edit? here is what my guest book looks like now http://ecntrcbeauty.org/guestbook i want to wake off those logos, on the top..change colors...what would i need to start with and is there a page that can help me with this..?

The 2 logo's can be found in templates/body.php around line 4 and 5