I would get a i3-2100 and one of the Asus P67 or H67 motherboards, make sure it's the B3 version. 4gb ram is worth it, here in the US we prefer Corsair, Crucial, Kingston, or A-Data. If possible the best WD drive would be the Black series. Any old case will do, but be very particular on the PSU. A Seasonic-built unit would be best.
For a video card, I'd recommend a GTX 460 if you can afford it.