Now both the x86 and x64 fully integrated version of the OS bits are FINNALY available!. They are up on the TechNet Subscriber download center!!!
My buddy Keith announced the x86 bits a couple of days ago, and he even briefly talked about his early virtualization experiences with Vista SP1 here: I spy the Windows Vista SP1 x86 Full DVD (integrated)
He also posted the hash and other file information here: I Spy the Windows Vista SP1 x64 Full DVD (integrated)