Re: Putting your OS on a new SSD
If the Windows disc is a Windows installation disc, you will be able to install Win 7 on the SSD, no problems, and use the HDD for storage/smaller programs that won't see any massive increase in speed with an SSD.
And you are correct to say that SATA3 and SATA6 interfaces are the same, you won't be seeing a bottleneck created with SATA3 interface either unless you get a drive that has over ~285MB/s transfer speeds, but even if it is greater and you are only getting 3Gb/s, that is still extremely fast, especially when compared to a standard HDD
Primary::: Asus M4A79XTD EVO | AMD Phenom II x3 720BE @ 3.4GHz | 2 x 2GB Corsair 1600MHz | XFX HD5770 + eVGA GTX260 Physx | 500GB Samsung F3 + 520GB Storage | Corsair Obsidian 700D | Win 7 Ultimate x64
Secondary::: Asus P5N32-E SLI Plus | Intel Q6600 | 2 x 1GB Corsair 800MHz | Gigabyte 9800GT | 180GB Caviar Blue + 250GB Storage | Win 7 Ultimate x64