Need frost, snow or clouds to enhance that wintertime image? Checkout my Frost & Tip brushes for free here:
http://suztv.deviantart.com/art/Frost-Brushes-51505520

I just released a HUGE collection of Photoshop Dynamic Cloud, Frost and Snow brushes - dynamic means that they AREN'T stamps. Check them out: http://www.turbosquid.com/FullPreview/Index.cfm/ID/434514

They are only $3

I've tested them in CS2 & CS3 and they work fine in both versions - so have at it peeps!