No it will not support an E6700 ( Core2Duo ). This is a very early LGA 775 board and as it says only supports Pentium 4/Pentium D and Celeron chips. There are no chips still made for this board. It uses VIA chipsets as well......not something I would recommend even when the board was new.
Why do you want to use this board? If you have an E6700 you can use just about any newer LGA 775 board for it.
You could look on ebay or somewhere similar.......maybe craigslist. With a Pentium D it would make a decent internet browsing computer but I would not put much money in it at all. Even with a Pentium D it would be painfully slow compared to what you could build for a few hundred dollars.
Yes and no! lol This can be confusing. The first chip named E6700 is first generation Core2Duo or Conroe. Pentium Dual Core processors do exist including one named E6700.......crazy I know. But the new E6700 is based on a 45nm manufacturing process and is even newer than the older 65nm based Conroe chip. Neither will work on that motherboard.
Maybe this will help. http://en.wikipedia.org/wiki/List_of_Intel_microprocess...
To be specific the board you listed will use Pentium 4 5xx, Pentium 4 6xx, Pentium D 8xx and Pentium D 9xx chips only.