Yes we need a lot more information. What graphics cards do you plan to use?
Do the 2 PCI-E x16 slots both need to be full x16 bandwidth or can one of the m be x8? What is the max video card you expect to have on it - in terms of today’s cards? It makes a significant difference in what boards cost and which you can consider.
Another key question is if you want to graphics cards - do you know if it will be nVidia or AMD or do you need one that supports both? That can make a huge difference in which board to go with.
Do you plan to OC – and how much?
You might find these reviews of groups of boards informative - if nothing else they will help you understand that different boards have different feature sets so what is the best board depends in part on your preferences:
[Also note that some of these articles are very long- but you can shorten the time considerably by going to the conclusion first and then using that to suggest which boards to look at in more detail]
I plan to have a ati 4890 or the nividia equivalent, a core 2 duo 3.16GHZ, 4 GB of ram either ddr2 or ddr3 depending on the board and around a 750-850 watt power supply. I plan to use the PC for high end gaming, i don't overclock and one day i would like to add a second graphics card, i hope this gives you the information you required, thanks for the help.
P.s i would like them both to be x16 but it is not a major deciding factor