<< I got a question...Am I going to be able to run a Tbred in my current KT266A chipset? If I can't, I need to know now...because I've been holding off on upgrading my Tbird for a Tbred. >>
Yes, you will be able to with a simple BIOS update according to AMD.
Although I heard there might be a problem putting Tbred's over 2GHz in current Socket A boards because of the high frequency.