IE Developer TOolbar

IE Developer TOolbar

I'm confused about this ...

i already tried to install it on 2-3 systems, but never see any change. Even if there is shown an error - it display the same lame unusable JS informations. sourcecode view doesnt changed too. i am too stupid for it ?

If i take a look at "Addons", IE Developer Toolbar & IE Developer Toolbar BHO are activated.

I'm using IE 7, but i remember to try it at IE 6 too

Thanks for help