Shooting infrared with Nikon

Wondering who has had any experience in shooting in infrared with Nikon cameras?
We have a D700 and D7000, so wondering if we will get good results with using an infrared screw-on filter, or should look at getting a modified camera body with the infrared filter removed
If looking at a camera body - does anybody know a good place to get one?
Any thoughts greatly appreciated
Cheers
Tom
We have a D700 and D7000, so wondering if we will get good results with using an infrared screw-on filter, or should look at getting a modified camera body with the infrared filter removed
If looking at a camera body - does anybody know a good place to get one?
Any thoughts greatly appreciated
Cheers
Tom