Choose from 3 graphics card to connect to plasma please help

Hello guys! I have a question about my soon to be setup (hopefully).

---I have a PANASONIC TH-42PX50U. And would like to connect my computer to it.
----It is a SOYO the motherboard says SY-P4I845PE. (It is barebones, I think??)
---I have found DDR Pc3200 memory for it, a 1gig and a 512mb.

I have 3 graphics cards to choose from (BFriday already got them, will return rest).

--ATI RADEON 9550 AGP 8x/4x
VGA connector for analog CRT tv. S-Video. DVI-I
Refresh Rate for 16:9 is 75Hz------>Do I match this with the TV??

--ATI RADEON 1300 PRO 8x/4x
Requires AGP 8x slot-----------> Soyo says 4x transfer, so I cant use this graphics card?
DVI connector for crt or flat panel. VGA for analog
Memory Configuration 256 DDR2 +128-bit interlace.--->>I need DDR2 memory?

--VERTO by PNY GEFORCE FX 5200 AGP 8x
VGA +VGA+S-Video outputs.
Maximum display res 2048x1536x32bpp at 85Hz
Flat Panel display support res 1600x1200 with VGAinput needed in computer
AGP 2.) slot-------------->do I have that? Manual says supports agp 2.0

I don't know much about this stuff or the insides of computers either, any help would be appreciated. I

don't know what else the computer needs though? Here is a picture of it.
[IMG](URL address blocked: See forum rules)[/IMG]
Do I need to buy anything else, I've got memory, hard drive, graphics card?