There are no conroe supportin mobos out now (well the Intel Bad Axe Rev 304 is, but for around $250 and hard to find). Just wait w.e you do, even if u want AMD, their prices will drop. Conroe mobos should start appearin soon. ATI Conroe mobos wont be around till august and they'll be under $100 (for RS600 chipset, onboard graphics, doubt theres CF) and around $150 (RD600, CF support). Although if you want CF, 975x mobos support it too, they should start appearin next month along with conroe.
Heres a list of ur conroe mobos: http://www.xtremesystems.org/forums/...d.php?t=101408