You'll just install Windows to the SSD, and set up the other drive for storage, as you want.
New hard drives should't violate the EULA, but the Windows OS is tied to your CPU/mobo set up. (There is alot of information out there about Microsoft End-User-License-Agreements, and what you can change, before needing a new license.)
I just did the same last week! Installed Windows to my new SSD, and used the other drives I had for storage. See my post: