From what I read, the Zalman Z11 will take an ATX motherboard, but not an E-ATX motherboard, so be sure that you get an ATX size motherboard.

I would agree that sitemail would be safer for giving mailing address, et cetera.

I still have some Christmas wrapping paper; I could overwrap one of those padded envelopes with it.

Is there some site similar to our eBay, where you could search for "2x 1366" or "dual 1366"?

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5