Ganesh,
As discussed, we can definitely talk about this at the CNP Meet.
I have shot IR images with both D700 and D800e (Above one with D800e) cameras. Both cameras did fine. All lenses may not do a good job! As for converting camera to IR photography, DIY looks like a last option. Though many people online make it sound no big deal kind of stuff, I can't venture into it. I haven't come across any one in India who can do this. In US, there is one company, LifePixel (
http://www.lifepixel.com), who seem to be experts in this. I'm waiting for an opportune time to get one of my cameras converted by them.