Hi, to all this is my 1st post sorry if is in the wrong place, my big question is related to HDMI, why because i only want build the box and conect to a lcd 32 in toshiba. HDMI can carry video and audio but this make me confused. Graphics card is only for video right/wrong! will the connection be easy to make [pc to tv] or i have to buy a monitor for the settings? 
My build:
Motherboad - MSI 770-C45
CPU - Phenom II X2 550 Black Edition or maybe [Phenom II X2 555 Black Edition]
Graphics - HD 4770, HD 4850 or GTS 250 ???
Memory - 4gb 1333mhz cl9 ddr3 - this is if i go for 64bit OS
Psu - Corsair CX400W PSU
Case - £££ - Zalman Z7 ATX mid tower
Cooler - Akasa ak-876
Hard Drive - 1tb
Optical - £££ Blu-ray
Any help will be appreciated many thanks.

My build:
Motherboad - MSI 770-C45
CPU - Phenom II X2 550 Black Edition or maybe [Phenom II X2 555 Black Edition]
Graphics - HD 4770, HD 4850 or GTS 250 ???
Memory - 4gb 1333mhz cl9 ddr3 - this is if i go for 64bit OS
Psu - Corsair CX400W PSU
Case - £££ - Zalman Z7 ATX mid tower
Cooler - Akasa ak-876
Hard Drive - 1tb
Optical - £££ Blu-ray
Any help will be appreciated many thanks.