"Login As" in FireFox ?...

Built new box - gave MS a chance with ie7 - regretted it almost straight away - came back to the FireFox fold, but...

One problem remains

How do you achieve the IE "FILE > Login As" function with FireFox ?

I have been up and down the menus - and up and down the Googled sites proclaiming help

But there was none

Help!

:confused:

What exactly does File / Login As do?

i think it associates your 'Windows Live' account with an IE one... not 100% sure, i installed IE7 and it offered to do some login crap which i ignored and turned off, firefox ftw :)