HELP!!

HELP!!!
I would like to change the picture on my header, it won't go away(much like the cold and flu we have going on).
I go into Template, then to add and arrange page elements.
I go to edit header. Hit edit. The image will pop on the right and it says"remove image". I hit remove image and it disappears for one second and then pops back immediately.
Is any of this making sense, help, I really don't want Santa on my page in January.

Oops. ..

I being computer illiterate pressed publish blog by mistake, I wasn't finished!! I never got to spell check, ignore the typing blunders, oh there will be many!!
Help I don't know how to send this on to my blogger friends as I have never done this before, I wanted to send it on to,
1. Rony, The Ghelerter twins
2. Diana, Sophia and Alyssa
3.Lil' bubble Queen, Nikki

I also need some instruction on how to add all these terrific blogs I follow onto my site. HELP.. anyone..please.