I am going to help a friend upgrade his 486sx to a Pentium 133 and a new motherboard. My problem is that his hard drives are both RLL drives, and he insists on keeping them. The drives should work fine, should they not, so long as I install the interface card into the new motherboard? But do I need to disable the on-board IDE interface? And is there anything else I should be aware of? Just trying to prepare myself for any oddities...thanks!