I'm pretty sure my color wheel is broken, and would be fine W/ replacing myself, but can't find where I could buy one. I have learned that the collor wheel is supposed to have4 segments, and have 2x speed, I'm not sure exactly what that means, but can you sue a color wheel for a different projecter w/ the same specifications?...

Simple answer No! Colour wheels do run at high speed (I think around 20,000rpm and you can get 4 and 6 segment colour wheels i.e for each colour.to get better colour definition for the higher end ones.

Remember the colour wheel is a precision device as It has to rotate in sync with the DMD chip as each different frame of colour information is sent to the dmd chip.
some important considersations for choosing another colour wheel- off the top of my head:
motor voltage and current
number of poles on stepper motor
size of motor- will it fit
diameter of colour wheel
purity of the colours etched onto the glass
mounting of the assembly

I'd be looking for an original, see if your authorised repaired would be happy to sell you a genuine one on the basis of no warranty no return.

but do give it a go if the repair cost and a genuine one is out of the ball park or similar cost to new
Good Luck!

Josh, you won't find a Toshiba color wheel anywhere. You WILL find the entire light engine for between $400 and $800 dollars. A new one could last two minutes or two years. I am no TV repair expert, just a pissed off consumer. My brand new $3000 tv is going to the curb broken, and I'm buying a Mitsubishi.