As much as I would love to just go out and buy a new laptop, I think I may go with a Mac Mini in the interest of saving some money and getting by for now. However, I would like to spruce up my current Macbook (13" 2.0GHz, 2007) model by putting in a new hard drive and upgrading to 10.6 from 10.4. My question is, how much is too much to put into this tired old machine? I know that hard drives have moving parts and wear out over time, but at what point do solid state compoents (RAM, etc) and other parts (processors, graphics chips, etc; with no moving parts) wear out? Since I have to buy the Mac Big Box ($169) to upgrade from Tiger, I'm probably looking at about $250 to to put the hard drive and OS in myself. Just trying to determine if it's really worth it. Also, if I do a full install of Snow Leopard to the brand new hard drive having cloned my previous internal drive to an external, can I migrate all my files and settings with a couple clicks, or am I better off cloning the original drive to the new one and doing an upgrade install? It seems like the latter would result in a lot of erroneous files floating around the hard drive.