New video editing rig

Any quad-core will do fine, but buy a better cooler for it.

So, you're buying a crap board to support DDR3 yet you're buying the cheapest/crappiest memory? That doesn't make too much sense.

I would go with a P45 mobo with no onboard video, something like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


Try to get DDR2-800 that runs at 1.8v. Just about all this 1066 memory is just factory overclocked DD2-800, hence why they need 2.2v. You also want 2gb sticks so you can upgrade to 8gb of memory:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...



Get a video card with 512mb of DDR3 memory, like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


And one of the most important aspects of a video editing rig is multiple hard disks, 3 minimum.
1 - for Vista and programs.
2 - to import your video onto and edit, also known as a "scratch disk"
3 - your encode/save disk. After you've edited your video, you encode it to this hard disk (you're reading the data on disk 2 and writing it to disk 3, which is MUCH faster and easier on the hard disks that reading and writing to the same disk).

Three of these would suffice:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Any quad-core will do fine, but buy a better cooler for it.

So, you're buying a crap board to support DDR3 yet you're buying the cheapest/crappiest memory? That doesn't make too much sense.

I would go with a P45 mobo with no onboard video, something like this:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Try to get DDR2-800 that runs at 1.8v. Just about all this 1066 memory is just factory overclocked DD2-800, hence why they need 2.2v. You also want 2gb sticks so you can upgrade to 8gb in the future.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Get a video card with 512mb of DDR3 memory. A 9500gt.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

And one of the most important aspects of a video editing rig is multiple hard disks, 3 minimum.
1 - for Vista and programs.
2 - to import your video onto and edit, also known as a "scratch disk"
3 - your encode/save disk. After you've edited your video, you encode it to this hard disk (you're reading the data on disk 2 and writing it to disk 3, which is much faster and easier on the hard disks that reading and writing to the same disk).
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Get 8GB of RAM if you're running Vista 64-bit.