This evening I made my machine a THREE dvd-burning monster, knocked out three 3gb discs in 10 minutes.
Three Pioneer dvd-burners (dvr-105, dvr-107d, drv-108)
SIIG UltraATA 100 PCI card with two IDE channels (about $30)
SwiftDisc Burning software ($20, supports multiple burners and is dead easy to use)
Maxtor 5400rpm drive, 40gb
Intel 815PEBt2 motherboard
Pentium IV 2.5ghz
Each drive was on its own ide channel as a master, the files were a video_ts folder copied off an old burned dvd onto the desktop of the system drive.
When I get some more money, I'm going to try 4 drives :)