TECH Help me pick a motherboard?

[Rommel]

I have a friend purchasing me some computer equipment from Canadia (cheaper than the UK), and the motherboard i was going to get isn't something they carry.

My list so far
Intel Q9400 Processor
Seagate Barracuda 500GB 32MB Cache *2
4 GB's of Corsair PC8500 DDR2-1066
Sapphire ATI RADEON HD 4870

now i was going to have the mobo being the:
Gigabyte GA-EP35-DS3P
http://www.canadacomputers.com/index.php?do=ShowProduct&cmd=pd&pid=017989&cid=MB.157


but they don't carry it in store.

Can anyone recommend a motherboard for me. Obviously it has to be socket 775 and support the RAM and videocard i've picked.

Also i've yet to pick the case. What will i be looking at in terms of the PSU to power all this equipment?

 

[Doomsday]

any of the Asus P5Q or Gigabyte EP45 series
a 500W quality PSU with 24amps on +12V rail, minimum