yo guys, I'm new here, and just a rookie in pc, i'm planning to get myself a desktop soon, but very very frustrated over PSU.

my specs will Asus P5Q3 mobo, C2Q Q8400, Nvidia GTS 250 1GB, seagate 1tb, 6gb ddr3......

so u guys recommend me using what type of PSU? and what W is enough for me?

i dont have lots of money, so please dont recommend me too expensive stuff.....

anyone can pm me if want give opinion, thank you!!!

is there any other graphic card equivalent to the performance of GTS250 1gb?

i'm very confused and blurrrr.....