|You already have two SATA 6GB/s and six SATA 3GB/s ports on your motherboard, why would you be considering using an IDE to SATA adapter? Why not just use another SATA port for your dual boot? I doubt you have eight hard drives already in your system.|
You do not tell us what operating system you are dual booting with so I cannot help you with those details, but most operating systems and motherboards support dual and multi boot, you just need to install the most recent operating system last. You can install XP (if your motherboard has drivers for it, though not as easy on SATA drives), then Windows 7, and/or Windows 8, and then you can even go with a version of Linux. The last one will set up the dual boot as long as you do it through the Custom install options. These can be on distinct hard drives or on distinct partitions on a single hard drive.
You have to be a little bit crazy to keep you from going insane.