Thanks Allan, I thought that was how to go about making a change. I have ConTeXt working to produce a beautiful pdf. However, it does not load up in Shubert's plugin... yet. I do however get the log file. I'll keep playing with it.
As for XeLaTeX, it is still using Web2c 7.5.2 so it does not work. I have a letter in to NRSI (the developers) to see if they plan on updating soon. XeLaTeX provides great type functionality so it will be a joy to use in TextMate.
Cheers, Robert