Setting up Raid 0 complete noob Questions

Hello guys, as the topic says I will be attempting to raid 0 2x ssds. I am currently running my computer with 1 ssd(primary drive) and 1 HDD(backup). I just received  my second SSD today and I really want to go for raid 0. I need some sort of guideline as to how I do this and if possible without having to format my primary(old) SSD?

I am currently running an asrock z77 extreme4 if that is of any importance?:p

If you guys know of a good online guide I could possibly look into before I waste your time would be more than glad to look into

Thanks in advance

Maybe? http://rog.asus.com/77402012/rampage-motherboards/what-is-raid-setup-guide/