http://www.burren.cx/photo/ir_conversions.html I came across this guy, he offers a 6 month warranty on his work. I know a few other IIS members have done it themselves, or some have just bought the hutech one already done. I know Photoncollector and Robby have done their own, [1ponders] is planning to do it, I got my 300D from Robby, he also used the Russian firmware hack for the 300D. The 350D may be similar to modify?