[development] Creating multiple login blocks with different validation rules.

Hi, Does anyone have ideas on how to implement the function in the subject? Basically I want a page with two login blocks, one for general users and one for premium users. I've used multiblock to get the two blocks up there but I need the two different blocks to work different for the different user types. That is if a general user tries to login on the premium login it fails and vice versa. Is there any easy way to do this or do I have to recreate my forms manually? Thanks, Anthony.