If your IDE drive is not part of the new RAID-0 you're creating it should not be difficult.
After you create your RAID array partition it in Windows Disk Management and assign it a drive letter (D: for example). Then just use your cloning software to clone from your C: drive (IDE) to the D: drive.
because if i try to set raid up now and boot normally it crashes with blue screen similar to if i tried to enable ahci on it.
I think it needs raid drivers installed first, and maybe other things first.
You are correct. You will need to enable RAID first and then enable/install the driver in the current OS. This can be done easily if you have a second SATA controller on your motherboard. Move the current OS drive to the second controller and set the "main" controller to RAID, leaving the second controller (the one the OS is now hooked up to) at IDE, and set up your RAID array. When you boot into the OS, it will request to install/enable the RAID drivers. Once you do, reboot.
You should now be able to clone the OS to the RAID array and boot.