please, no photoshop vs fireworks guerrilla here...
i have been using photoshop since v. 2.5, i loved it, then i discovered fireworks and i switched.
they are NOT the same software, and for high resolution print work, photoshop is still the best soft available, as most people know.
fireworks uses an "object-based" interface, where every element of the page is a selectable element. it is vector based, and web optimisation is still far superior to photoshop's. and by using vector's, it drastically reduces the need to use illustrator for shapes and drawing, THEN photoshop for effects and exportation.
some features are now quasi-obsolete, such as text that stays editable no matter what, since photoshop finally implemented it, and scaling is way more precise in photoshop than anything else i tried. but overall, fireworks is an incredible tool, with dozens of extremely designed built-in features and extremely well built export/optimisation in an all-in-one package.
so please, enough with photoshop. they do have a (very successful) challenger, and they definitely lost their monopoly.