1.8v is the official spec for standard memory, not performance memory. There isn't even a spec past PC2-6400 and it depends on the memory chips as to what voltage they prefer. The regular stuff you get from the likes of Crucial (not Ballistix) should be fine but it is very common for performance memory to be unstable @ 1.8v and not many people would be willing to run memtest all night to find out. If it is the rated voltage then it is warranted voltage and as memory tends to have a lifetime warranty it is no big deal, it'll be useless long before it dies.
Anyway on topic, I doubt you'll have to do anything more than that, the BIOS will auto-detect the hard drives, graphics card, CPU etc...