Okay, Swingbopper, here's the original, unprocessed image file.
Here's my conversion process. I open in Adobe Camera Raw. White balance is "As Shot," which should be a temperature of 2000 (the lowest Adobe will go). I adjust tint to 0, fill light to 20 (+20), Recovery to 5 (+5), Brightness to 60 (+10), Contrast to 30 (+5), Sharpening to 30 (+5), Noise Reduction Luminance to 5 (+5) and Noise Reduction Color to 30 (+5). Then I save as a 16 bit tiff file.
I open the tiff in Photoshop, and use channel mixer to swap the red and blue channels. Then I do Image: Adjust: Invert. Don't ask me why, but I get better results when I adjust the image as a negative, then invert it again to positive. Once inverted, I hit Auto Levels and Auto Color, then adjust the Brightness to -10 and the Contrast to +5. Then I Invert again. At this point, I'm pretty close, but depending on the image I'll tweak it slightly with Curves, Saturation, etc. until I get it where I want it. Then I sharpen once. Then the final step (which can be skipped, btw) which gives the image a luminous effect, Filter: Distort: Diffuse Glow. I set Graniness at 2, Glow Amount at 1-2, Clear at 15-18. Finally, I click Edit: Fade Diffuse Glow and set it at 40-50 percent. Those steps gave me the first image from the RAW image posted above.