I can't advise you strongly enough not to do this. Even if you manage to get the OS installed, Solaris is not usable for anything vaguely desktop-related. It's a waste of good hardware. Besides you can't even patch it unless you pay Larry Ellison for a support contract.
Instead, I suggest installing Solaris as a guest OS using VMware player (it's free) and only booting it when the mood to do some serious command-line work takes you.
You can download the latest Solaris 11 x64 binaries from here.