Dohc-WP
Ron Burgundy
Boetie Voicy
I reckon get a E7400,2gb RAM,9600GT
That will sort you out for for +- 2yrs or so.
Cases are purely a personal choice, just remember "gaming" cases don't come with a PSU. So anything 400W and above will be perfectly fine for awhile.
Most 9600GT's these days come with a HDMI,DVI output so that will be fine for ur TV LCD.
But i would suggest getting a 19" LCD screen or bigger to get max benefit out of it. They going for cheap these days +-R1200 for a LG.
i would not suggest getting a Phenom x 2 atm. M/boards would be hard to get hold off in this country for the meantime.
U dont need a new mboard for a Phenom X2 as it fits and works in the OLD am2 boards perfectly !