Ive seen your posts bouncing around with mine. You may have a bad CPU or MB (determining wich can sometimes be hard). I ordered a CPU/MB combo and could not get it to work. I went out and bought a CPU/MB from fry's (A7M266 & 1.4Mhz/266FSB) slapped it together and it just worked. I am RMA'ing my first order, I will have to pay a 15% restocking fee. I found it easier to spend the money (and wait for a refund) than to fight with stuff that is not working.
Sorry, I do not have the answer to your voltage question, but I did just install the same board/cpu combo with 512MB of Micron PC2100 ram. As I said earlier it just worked -out of the box-. No changes to the board at all. NONE. No jumpers, no dip switches, no bios. It just came up at the proper speed.
If its worth anything, Id just take it back and get another one.
Joel