Motherboard support questions ( building a desktop)

I have some spare cpu's, ram, hard drives, psu etc..

What i don't really have are some motherboards that support amd chipsets. I have various am3 socket chips and i am trying to do a mini itx build but i only spotted 1 mini itx motherboard that will take am3 chips.

It is a M880GITX-A-E, however my problem with this is that it only has a pci-e x1 slot which if i am not mistaken VERY limited to what i can put for a video card i don't think i can put anything better than an hd 6450.

If anyone knows of a mini itx motherboard that will take am3 chip and has a pci-e x16 slot please mention some.

Also most of the spare ram i have is 4 gb pc3-10600 CL9 240 PIN , what motherboards that have am3 sockets would take those sticks? I was looking at an asrock 880 gm-le but unsure if it would support the spare ram i have.

Would either of the motherboards i noted above support overclocking or unlocking of the phenom or anthlon II chips? If not which ones might ( am3 sockets)?

thank you for any replies