|What makes you think your board is dying? Make sure the board is the problem before you needlessly replace the wrong hardware component.|
You have an AMD CPU therefore you need a board that supports AMD CPUs. Intel does NOT support AMD CPUs, AMD does NOT support Intel CPUs.
The A64 3000+ came in several different socket types, 754, 939, AM2. So the 1st thing you need to deteremine is which one you have. Then you need to decide which features (onboard video, memory type, number of memory slots, etc) you want in your motherboard & which chipset (VIA, SIS, nVidia, or AMD) you'd prefer. Then you can begin shopping for a board.
Understand that Windows will have to be reinstaled after the board swap.