Got an idea... mod your D90 for IR... heeheehee...
YES BRO! I'm it!
Nikon D90 | AF-S 18-105mm | AF 50mm f/1.8D | Tokina 12-24mm f4 | Sigma 30mm f1.4
It seems like D70 is more sensitive to IR wavelength.
You can read the sticky thread on camera/lenses capable of IR.
Lens is also important here.
I have tried using a D90, a sigma lens and an IR filter. It seems like I am getting hot spots, sometimes. The tonal quality of the photos are quite far off from the regular IR shooters in the IR sub-forum. It could also be the weather. shrugs.
kriegs, I printed an 18" x 12" (slightly larger than A3) image from a full-res CMI shot (or near enough to full size after some slight cropping).
Looks pretty sharp
cost me abt $20.