playing consoles on computer screen

[frequency]

hey guys whats up.....i have a question. with all the ps3 and xbox 360 games coming in high def can i use my lcd flat panel screen as my screen instead of buying an actual high def tv. my computer screen is 1200x1024 something along those lines..damn i cant believe i dont know the resolution i guess cause im not using my actual computer. but i do know that its a very good quality screen. anywayz.... could my lcd flat screen take the place of a high def tv sense it has very good resolution and it has more resolution lines than a standard tv and high def tv's? if i could i use my pc screen then i just have to buy a vga box to plug in my console rca plugs, which is cheaper and wouldnt make a dent in my wallet.