if u hav cooler master extreme 500 w then
don't think anything. Jus go for gtx 260. And if i sugest go for leadtek winfast
gtx 260 extreme+ . its awesome card in a budget of 12k.
it will cost u around 11-11200.
i think gtx 280 is not available and u sud go for gtx 275,
its an awesome card within your budget and aftersale support in NVIDIA is much better,
check with Ledatek Winfast GTX 275.
for PAL you sud go for leadtek winfast external tv tuner,
TV PRO 1680 max resolution 1680*1050
TV Pro 1920 - max resolution 1920*1200
which one support your Monitor, you can get that.