Haha. I found the problem with my SATA Drive... It didn't have power. I'll elaborate:
I have these two molex splitters that came with two of my ATi Cards (My current one, the ATi Radeon X800SE, and my dad's, the ATi Radeon X800XL). I usually use one for the HD's, another for the Videocard and Lighting. This time, I split the power differently, I made it one for Videocard and one HD, the other for Lighting and one HD. As you all read, I took out most of the lighting and re-did the power scheme. I noticed that there were two unconnected molexes, so I connected them (one was male, the other female). So when I pulled out the power from the SATA drive, I had a molex splitter with a loop and another molex connecter. D'oh.
Update on the cathodes: The UV cathode inverter was fine! I figured since one tube wasn't working and the other was brighter than usual it'd be ****ed up, but I unplugged the bad one and the remaining one lit up all the way. Then I plugged in a working blue cathode to illuminate the side of my drive bays. The UV cathode is next to my motherboard behind all the cables so they're UV Backlit and alot of the ports on the right side of my mobo are quite prominent. It's lit well and well lit. I also added a switch to the Lazer LED's, to turn them on or off for effect.
Pictures later. I think this is the best Cavalier has looked.