combination for music,photo,speed

I PLAN TO BUILD A PC FOR (FUN)MONEY NOT A PROBLEM,BUT Ive READ SO MUCH ON MOTHERBROARDS,AND PROCESSORS,THAT I CONFUSED,I LIKE RD.MEMORY,DDR400.MOSTLY MUSIC,PHOTO,SURFING,AND WORD PRCESSING.BURNING CDs,dvds AT LEAST 80GB DRIVE.512MB.MEM.,SHOULD I GETINTERGATED AUDIO,NIC.,COOLING,CASE,P.SUPPLY.
THANKS FOR ANY ADVICE.(TRAV3850@BELLSOUTH.NET)