Seven steps, used Photoshop CS3, translatable.
1. Crop, sharpen, whatever.
Do whatever it is you need to do to prepare your base.
2. Duplicate background layer, set to soft light 100%.
3. New Hue/Saturation/Lightness layer.
Master: +15
Reds: -33
Yellows: -61
4. New Color Balance layer.
Midtones: +44, +21, -53
5. New Channel Mixer layer.
Red: +80, 0, -37
Green: 0, +100, 0
Blue: +15, 0, +69
6. Add texture, set to screen 100%.
Unfortunately I do not know who made this texture, but if anyone recognizes it please tell me so I can give proper credit!
7. New Brightness/Contrast layer.
Brightness: +12
Contrast: +12
And you're done! I'd love to see your results.
Comment here if you're feeling generous!