Might it play ArmA 2 Combined Operations on high settings?

You can definitely play ArmA at high settings.

Doesn't seem to have a video card... your pulling my leg aren'cha?

It has a gpu (onboard), not sure on how good it is though.

It's grrrreat!.. but no, I don't actually have anything useful to add.

bump

What might I expect if I play Arma 2 and operation arrowhead? Higher or lower settings? How upgradeable is this computer?

Not at a playable framerate. Operation Arrowhead specifies a Radeon HD 5770 or Geforce GTX 260 under recommended specs.

http://store.steampowered.com/app/33930/

AMD HD 3000 is an old integrated GPU. Your current GPU may well be faster. Put an entry level gaming GPU in there for another ~$120 or so and you can probably get Combined Operations running on high at a reasonable framerate.

Have you considered asking for build advice on a tech forum? Some of those people build systems all the time and help you get the best bang for your buck.

yeah. needs dedicated card.

7770 is cheap and quite powerful card. you won't max out arma but it should play smoothly on avg settings at 1680

but otherwise. good purchase.

So if I use this card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814125432
combined with the integrated GPU should I be find running Operation Arrowhead? High settings?

Any dedicated video card you get will be used instead of the integrated one, the power of the two isn't combined. And that card is no good, I wouldn't spend less than $100 for a dedicated card that you expect to serviceable for games for a while.

If you get this computer, your video card won't be supported in the event that you upgrade to Win8.

But if I upgrade my video card that won't matter right?

When you say 7770, do you mean the card integrated onto the motherboard? I thought it was a ATI 3000?
Scroll down to where it says "onboard video".