Looks great. I've got it installed as a Virtual Machine now, my last download of Windows& must have been faulty.
And I am typing this in Firefox 3 running in Windows 7.
It runs quite smooth, even in a virtual machine, thought some of the graphical features are a little slow sometimes, but I realise that I've only got 16mb of VRAM dedicated to it, so that's probably why.
Oh and they've changed paint, it looks quite weird, much like the new MS Office.
I personally think this looks better than Vista - graphically speaking, as for features, I'm still exploring.
I'd test DBP, but it's at my other house.