man i really appreciate your work,, but i see your website background has been tiled/unmanaged ,please choose a background with full width that dont get tiled.
Anyways good luck friend
You can just open them in photoshop and save them for web. What do you mean by compressing? Compressing it's size (width&height) or just compressing it's size on disk (bytes).
If you want to save some bytes you can use Yahoo's http://www.smu****.com/ysmush.it/ or you can install pagespeed for chrome and select the optimized images that pagespeed shows to you.
As for the website, it's too colorful, make buttons a solid color (or a softer gradient).
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