I need some advice.

About, oh two years ago, I bought a cd-rw drive, and when
I installed it, I just replaced the computers normal cd
drive. However, now I want to run them in tandem, so I
tried to get them both in and running, the problem is,
that my computer won't recognize the second drive. I have
one as slave and one as master, I've got a list of things
to try here, such as changing the master <--> slave
setting on each of my secondary ide's. I also have been
told that I should try and boot up with the start disk
when I install the new hardware like this. I'm going to
keep playing with it today, but if anyone has any
suggestions, I would love to hear them.

 Thanks a lot.
    Jason