Your Monitor Resolution: 1024x768, 1280x1024 my computer monitor is old so i haven't a clue, probably one of these..
Additional Comments: I would like quite a fancy case E.g. the Coolermaster Storm with a window.... I would need it to be quiet, some LED Lights and liquid cooling... I hope to Play Guild Wars 2 on Max settings and push out high FPS!
And Most Importantly, Why Are You Upgrading: My computer is probably over 4 years old.. I play WoW atm on all the lowest settings and only get 15fps.. my computer can't even download GW2 and i'd want my new computer to get me through Uni.. So just over the budget can be reasonable if worth it!
First off you need more money for everything you asked, but below is a good shot with your budget. the Case is a place holder if you don't like it, find one you like.
notes: liquid cooling is not quiet, flashy cases usually aren't quiet, and performance Graphics cards generally aren't quite (the newer ones like GTX 600 series and the the HD 78/7900 series are a lot more quiet than the predecessors. but you need more money for a even the low end HD 7850.