Hi, I have been reading these boards for months now, and i've gained a lot more knowledge and understanding of Macs and how you can upgrade them etc. I am looking for some advice, on what kind of tools i would need to do all or most jobs on either a Mac or PC. A PC builder or tech repairer might be able to guide me. Are there any toolsets for computer techs? What sort of size screwdrivers am i looking for... any guides you can recommend ? Put simply, I would like to be able to upgrade and repair Macs and also build PC's. Thanks again, i am confident you can help me. Rich.