Ok, I ran it and it'll cost about 600 euros each ($750). This is with case, 450W PSU, HDD, 1GB memory, decent mobo, AMD Athlon 64 (2.0GHz x64 or 4.0GHz x32), 17" monitor, X600 video, DVD burner.
With the Intel is comes to about 650 euros ($800).
I highly suggest getting AMD; it's cheaper and runs a lot better. I also suggest a different vid card, there are better ones for cheaper which may fit your budget (the vid card was $125 or about 100 euros). It can probably knock the price down to about 80 euros ($100) and make your budget better.
EDIT: Plus about 70 euros ($80) shipping and also money for your OS and other software.
And to legoman, the reason the 820 is more expensive is because it has more L2 cache (which is still stupid to raise the price that much for when it has everything else less than the 920).
Edited by TheYoda, 03 May 2006 - 04:09 PM.