I use a freeware program called Screen Shot Captor and it works great for resizing to a dimension or to a specific size weight. It also allows you to crop and add animation, captions, or all sorts of other graphical treatment: Screenshot Captor - Mouser - Software - DonationCoder.com

__________________
----------------------------------------------
'07 4.8i Titanium/Black (current)
'05 4.8is LeMans/Black ('06-'08)
'02 4.6is Imola/Black ('04-'06)