I created a transparent effect with the application DeskProjection  (abandoned but you can find it on majorgeeks here )

as you can see in my screenshot the image on top is the same of the desktop wallpaper and the opacity is set to 20%
my request is an application similar to DP but able to automate the process to pick the wallpaper.bmp in C:\Documents and Settings\user\Local Settings\Applications data\Microsoft
 
or on the contrary to be able to set at the same time as the foreground working image as the matching desktop wallpaper

thanks for any help ! http://s674.photobucket.com/albums/vv101/frankelll/?action=view&current=Screenshot-27_06_2011183905.jpg

So strange I already checked Minimize to Tray Plus but probably all my tries were on the portable version not the Firefox (3.6.16) default system browser as finally I did this time ! well Curt you made my day !!  :Thmbsup:
I will be very pleased if you will find something you like (especially icons also animated for Firefox !) on my free Wincustomize gallery  http://frankell.wincustomize.com/
many thanks again !! :P