My Com Spec is
Intel®
Pentium® 4 CPU 2.66GHz
2.68GHz,512MB Of Ram
My Graphic card is GeForce 5 Fx5200

What should i upgrade to play wow in a No Lag Condition ( Not Latency i mean by like loading npc and stuff Faster ) And to have a better graphic ?

Im running windows XP and 1gb ram is definitely not enough.

It's not about spending RM1000 just to play any one game. It's not just about WoW. The simple problem is that when you try to piecemeal upgrade outdated systems, it is wasting money because you buy older components. You might need older memory, which costs more than mainstream memory and is slower. You might use older AGP cards, which are not value for money either. You use the best CPU the older socket can support, but the CPU is being phased out and from my experience, it can be unstable.

So let's say you manage to get a decent WOTLK-barely-make-it-lar-bro-QQ system by upgrading the memory and AGP GPU in a tight budget. But that system will last another year at most, and you can't play the latest games next year end. If you want to play the next-generation software, you then need to upgrade again.

Instead, how about if you saved the RM1000 and topped up some more later? You can then do a big bang upgrade and get a brand new rig (new mobo, CPU and graphics card). It futureproofs you for much longer, you actually save more money in the long run, unless you suddenly GF aggro and swear off PC gaming in the future.

everything.