over christmas i assembled my first intel system. and my first socket T or lga775. it was extremely simple, the processor will only fit correctly one way, so, if you're not an idiot and bash the thing in you'll be just fine. i should also note that i installed a zalman heatsink on it which was pretty tricky and involved a bit of force to be excerted while screwing it down into its bracket... but everything is fine.
as for the psu, my new thermaltake one came with an adaptor for the 24pin connection, maybe look for one that comes with? otherwise, you're fine without. i believe you just plug it into the right side of the connection and you're set (but double check that).
easy peasy.
