I want to buy a new PC to use it almost exclusively for photography purposes. I am planning to migrate to RAW mode in the near future, so I will be dealing with huge TIFF files. I still don't have a graphics program, but I guess I will be using some version of Photoshop. I'd really appreciate it if you guys could point me in the right direction. What microprocessor? Intel or AMD? What speed? How about those dual-core chips? What graphics card? RAM? Hard drive size? Windows XP or Vista? If Vista, then Home or Home Premium? I apologize if my questions show too much ignorance, but that's exactly why I am asking them. Thanks much in advance.