~600W is about the range I'd recommend, yes. Corsair, PC Power & Cooling, and OCZ's GameXstream series are all brands/models I'd recommend. If you can find a really cheap 9600GT then that's probably going to be the best for your situation, but even a GTX 260 should net better performance.
I can't really recommend LCD's, I gave up trying to keep track of them beyond some of the most well known models. If those are good prices in Rupees, then there's nothing wrong with the monitors that I know of, they should be fine. I just can't tell you how good a deal it is because I obviously only know it in USD. If Dell is available I'd suggest you see how much the Dell S2408 costs to use as a comparison to other monitors.