PIX Firewall - Transfer Configuration File

I'm swapping out a faulty PIX firewall with an new, identical one (version 6.x), however I was wondering if there is a way to transfer my configuration file of my old firewall to my new one. There are a lot of lines and I really don't want to type it all out again. I used TFTP to export the configuration file from my old PIX, so I guess the question is how to get it into the new PIX. Also, what's the best way to do this with little downtime and not having network collision with both PIX being up.

Thanks!