display 1080p

how long is your HDMI cable?
what analog cables? RGB or YCbCr?

Generally its better to use YCbCr cables than HDMI/DVI especially over long distances.

Actually the hdmi should be fine. I think you need to play around in your Catalyst Control Center. You'll want to make sure that you enable 1080p60 format. You'll select DTV (HDMI) and under that you'll select HDTV support. Once you have that enabled you are going to want to make sure that you set your desktop area to 1920x1080 in CCC with a refresh rate of 60. My guess is that your in 1080i right now with the TV. I had some problems getting my PC to display on my tv right. I was only getting 1080i and it looked like crap. Also, you'll want to check your scaling options to make sure it goes to full screen.

The YCbCr refers to component cables that are red, blue, and green. Those cables will only do 1080i so I wouldn't worry about using them. You're best bet is tweaking with the HDMI settings so that you have audio going over the cable too. I will say that it's a nice feature of Samsung tvs to support full resolution over the VGA port. My Toshiba only does 1336x768 over VGA so I didn't have a choice of what cable to use to get 1080p.

it hasnt worked, the tv still makes a whistleing sound and the screen looks darker than the vga cable and the writing looks blocky

i am sat about 1ft away from it though but when i was using the vga cable it looked really nice up close as well. im concerned about the whisteling sound. it doesnt make this sound when i set the resolution to 1600X1200, any higher and it does with the hdmi cable

i dont use the sound from the hdmi cable, i got 7.1 surround sound from my pc that i use.

i wanted the hdmi cable to work because i was hoping to buy a blu ray player for my pc so i can watch movies and use it as a entertainment centre as well but it looks like it isnt working as i planned

YCbCr cables are called 'componet' cables. They are different than RGB/VGA cables. Component cables are the ones that are green, blue and red.

digital =! better

ok ill try and get a shorter hdmi cable and see how that works out. the tv only makes a hight pitch noise, like on old tv's when the capacitors are going.

i dont have much knowledge on HD and that but are you saying that if i have AnyDVD HD, i can watch HD quality films on my tv through an analogue cable, because im running the resolution at 1920 by 1080.