Multiple Keyboards in XP

I did a little bit of searching on this and there really doesn’t seem to be a solution for using multible USB keyboards in MAX under XP. What I would like to do is have up to 5 computer keyboards controlling various parameters at the same time. It sounds like this would be easy to do but, yeah, there doesn’t seem to be a solution. I saw that a few other people here were struggling with this awhile back and was curious as to what they came up with. Any ideas? Any externals I don’t know about?

thanks in advance guys.