the resolution is the amount of pixels on your monitor, signified by the horizontal amount then the vertical amount (ie i am playing on a 1920x1200 resolution monitor, ie 1920 horizontal pixels and 1200 vertical pixels)
Are you using a CRT monitor or a LCD monitor? If you are using a crt then you can change the resolution to practically whatever you want, whereas is you are on a lcd monitor then it has a recomended resolution.
In vista go to control panel > personalize > Display settings and then look at where it says resolution x by x pixels to see what resolution your monitor uses (assuming its an lcd) and post that back here
sorry, this is my 1st time posting on here and 1st time building a comp. please be patient with me.
Me telling you to post more then just a link wasn't a personal attack, i hope you dont take it as such, it's just a so-you-know for the future It makes it much more easier for us to help when we dont have to search through multiple tabs and it is all just available to us on the forum. Thank you for correcting that
Its a good card, should handle whatever you want to throw at it for now and that particular one comes with a free CoD 4 game, however you would lose the option to crossfire in the future if you went with the nVidia card (as p45 mobos don't support sli)