moth

Hi, I would like to know if this method of making a PCB (I think they call it the Toner Transfer method?) would work if I needed a circuit that would drive digital signals between a microprocessor and a DDR SDRAM @ 133 MHz (and 200 MHz?) near it on board: http://www.instructables.com/id/Cheap-and-Easy-Toner-Transfer-for-PCB-Making/ I'm new into this. I don't know what "variables" matter when designing a PCB board. For example, does the thickness of the tracks matter (I don't mean the thickness "bidimensionally", I mean its depth)? How can I affect that? Etc.. Could somebody enlighten me here? In synthesis, what care must be taken when designing a board for fast data transfer? And how can I simulate designs to make sure there won't be much noise between tracks and etc? I know this information is widely available on the internet. It's only there is almost too much, so I'm quite lost here ;D And just in case.. is soldering SMD components manually at home a good idea? I mean.. think those 256 pin, high density ICs... Do people even do that manually? If not, how can a hobbist do that? Won't it be too expensive? Thanks, The moth