I try to keep up with all the new technology out there, but at times it is difficult. Current DVD Multi-Layer writers are fine, the new blu-ray will be expensive to begin with then the price will fall.
I have a 64bit CPU but use a 32bit O/S, the CPU works well, yes dual-core would be nice, but then quad-core is coming out next year so may wait till then.
I have pci-express grahics, but am not a gamer, but still get great pictures using it.
I do however use pcadvisor & other mag forums to see the reviews, look at what is coming out & of course oggle at those pc's at £2k plus.