navigation button problem

Ive created and installed my own flash navigation buttons and can alter the pictures for every one except the private messaging new and no message images......everytime i add the image links it tells me to add a menu name,but it wont let me change or alter any of the text or add a menu name.....can anyone please help as my forum looks rather silly with flash buttons and only one done by text,hope to get this sorted as soon as possible,thanx

Display>Pics management
Advanced mode
Change the image there.

i've tried that but its refusing to let me alter anything on it....i cant delete the menu name or add one when its requesting me to do so.....there is already a menu name so it shouldnt request one imo ...im using the advanced mode,this isnt the first time ive had problems with it on several other sites ive built for friends its done the same

heres an example of problem:

Sanket wrote:Display>Pics management
Advanced mode
Change the image there.

Did you see this?