I am using Firefox 188.8.131.52 in Windows XP. My page has a variable width, with a min-width setting. IE Renderer rendered IE7 with a very wide screen -- I had to open the width of my browser to take it all in.
There is one limitation to IE Renderer: Enter something like http://www.example.com/#foot
and it renders the same view as if I had omitted #foot.
I use MSIE7 also, to check out the site, together with Opera 9 and Safari for Windows.
BrowserShots gives me a postage-stamp view, but I get a good idea, and know that Konqueror 3.5, I think it was, renders my site well in Linux.
A friend e-mailed some screen shots in MSIE6 to give me a good idea on how well my attempt at an alternate CSS worked out for IE6.
Thanks for the links.