You'll need MIL eliminators, or you can turn off the heater bank downstream / 02 sensors with a tuner. If you're able to hook up your tweecer to the car that should be able to disable it also.
Do a search, there are a few threads on home made MIL eliminators you can put together yourself for cheap and save a few bucks. I went the lazy route though and spent the $50 to have them sent to me before I had my tuner.
My experience with MIL eliminators Maybe its just the ones I bought but they kept my check engine light off for about 2 weeks then it came on. I just went to a tuner and had them turn off the rear o2's.