Firefox screenshot extension

I was using a screenshot extension called 'ScreenGrab', but it does not apply to Firefox 2.0 anymore. (Now it has another release ScreenGrab 0.8 available for FF2) Thus, I have to find another screenshot extension that can be installed in Firefox 2.0. Today, I find a good one called 'Pearl Crescent Page Saver', which is an extension that lets you capture images of web pages in PNG format. =)