IDE Speeds / Connection Options

I have what is hopefully an easy question for some of you regarding IDE speeds.Can CD or DVD drives run through a PCI IDE card, or is there a significant access speed decrease in running the HDD through a PCI IDE card vs. straight to the MB controller?Here is the scenario:I am doing a fresh build/install of a FS dedicated machine. My original intent was to set up a RAID 0 configuration, however doing this at the MB level was unsuccessful. (If anyone is using a Gigabyte GA-K8NS Ultra 939 and has had success doing this with IDE drives please share!) As a result I result I partitioned 1/2 of each of my hard drives C: (OS will go here)and D: (storage)at 75 GB each, and then used Windows (XP Pro) to partition the other half of each drive as a striped volume (G: 150 GB, where FS and associated programs will go) or essentially a virtual RAID 0 if I understand it correctly.What I would like to do is place each physical HDD on its own controller. I think going straight to the MB would provide the best performance, but that is based on nothing more than the thought that adding a link between the MB and HDD (the PCI IDE card) would slow things. However, like most people I have 4 IDE devices (2 HDD, CD, DVD) and 2 IDE controllers. So something will have to go to a PCI card.So that brings up the question, which should go to the PCI card, the CD and DVD, or one of the HDDs?Thanks,Robert