A few months ago I was approached by one of our site sponsors, ATXPowerSupplies.com, in regards to a power supply cross reference guide they had in development. This guide would allow a visitor to enter the manufacturer, make and model of their computer and have a compatible replacement power supply recommended to them and available for purchase. Anyone who has done computer repair work knows it can be next to impossible to find a replacement power supply for a manufactured PC.
Check out the full article at OCIA.