[Darkimmortal]

Originally Posted by hydn

Is this a one time process for each when an admin clicks "compress CSS" in the admincp? or is there something that also has to be done dynamically during each page load?

The actual minifying is a one-time process which can be run manually via 'Compress CSS' but will also run when you save a template or import a product. During page load a few regexes redirect references to css.php directly to the saved files, but these are pretty light.

Originally Posted by ps2wiz

Any instructions on how to get Attachment Optimiser operating on IIS7?

Thanks

It should 'just work' in most browsers, but for maximum compatibility you should look up how to add custom headers and search for .png anywhere in the URL (specifically the query string) and set the content-type to image/png, and the same for gif and jpg. I've never used IIS7 so I can't really say specifically how to do that.