For a motherboard the budget would be around 100 max 120.
My full config:
500w psu
current mobo no idea...got it from china
g card : amd radeon hd 4670 (i am going to buy another for crossfire)
c-media 5.1 digital audio card ..(if poss a mobo with built in 5.1)
2x ddr2 corsair 2gb ram
Phenom II X4 black edition