The technique:
The first and most important thing; an IR filter. I personally use the Hoya R72 filter.
OK, so after I get the picture on my computer, it has a very very red tone to it, because the D70 senses IR frequencies in on the red spectrum (apparently some are green, too)
For the B&W one, all I did was desaturate, and increase the contrast.
The Orange/brown one was a result of "auto levels" with a tad of tweaking
The dark blue one was the hardest. I played around with the color channel mixer until I had a pleasing color, then brightness and contrast
The rest of you, thanks, and you all need IR filters, too. They're worth the price :mrgreen: