1) Whoa... where did you get that from?! The Conroes are on of the same family on LGA775. Any Conroe works with any Conroe supporting motherboard.
2) As has already been said, E6300 = Conroe.
3) As for RAM, will you be overclocking? If you will, PC5300 is really too slow. You should be looking at PC6400 at the minimum.
Jon
Thanks for replying, but next time, please read before you rush into things.

1) First I was thinking about a MSI K9N Neo-F (amd am2 board) wich doesn't support the Conroes. (As I was told)
3) I don't know anything about harware, so overclocking SOUNDS cool to me, but I don't know anything about it.
