yassinedk on "i'm tryin to change title and tagline but..."

hi,

i have a problem with my wordpress blog, actually i bought a theme from sitemile, but when i try to change the title and tagline, they dont be shown in navigator tab, so for more "aesthetic" i want them to be shown in navigator tab, how can i fix that problem, its just my domaine name who appears their,

thanks and respect!