i think its nvidia 9800 gs
No, you will not only need a graphics card, but one that meets the requirements.
NO.for a ps2 emulater you need at least 2gb ram, and a Pentium 4.
pscx 2 is still the best ps2 emulator out there, and it requires a very strong system cpu/ram/gpu. Emulating a ps2 is a heavy task, so any ps2 emulator will need a high end system. My suggestion is try and find the best GPU pluging.
It meets the minimum levels for PCSx2 emulator There are other requirements for the emulator and found under related link
No the Xbox could not run an emulator for the PS2
No, a DS emulator is not compatible with the PS2
yes
yes you want graphic card to this superb game
Read about the PS2 emulator on the related link
PCSX2 is the only PS2 emulator to consider and they are working on Version 9.9
see both the related links for information on the best working PS2 emulator.
Yes you can using the PCSX2 Emulator you can run ps2 games on your PC because i tried it before and ran Crash.iso (ps2 DVD copy) but with a low fps because my CPU settings were 480 mb ram and 2.7 ghz and 128 mb graphics card & with your settings i think you can