Building a new gaming pc for a cheap budget, advice needed

[redjonathan1]

Hi, I am building a new gaming pc mostly for playing WoW (World of Warcraft) but also some other games. I know these aren't really demanding but i want something that i can use for a couple of years without having to upgrade. I am looking for a pc costing NO MORE than $800 (Including monitor!).

I am new into building computers and so i need advice and compatibility checks etc... So far i have this:

Tigerdirect.com :

Motherboard + CPU (Asus M4A785-M Motherboard + AMD Athlon II X4 620 Quad Core Processor) = $179.99 COMBO
RAM (Corsair XMS2 4GB PC6400 DDR2 800MHz 2x2048MB) = $74.99* Rebate, $99.99 original price
Hard Drive (Western Digital 320GB 7200rpm 16MB SATA-300 OEM)=$49.99
Mouse + Keyboard (Iogear GKM502) = $19.99
Monitor (ASUS VH198T 19" Widescreen LCD Monitor 1440x900 10000000:1 Dynamic 5ms VGA, DVI Black) = $129.99
PSU (Silverstone Strider ST50F ATX 500W) = $59.99
Case (Cooler Master Elite 335 Black ATx RoHS Case) = $44.99

Novatech.co.uk :

Graphics Card (Novatech ATi Radeon HD 4850 GDDR3 TV-Out/DVI/HDMI PCI-Express - Retail) = $132.35, it is reported that when you order this card that some people get ASUS; some people get XFX; and some other brands.
Optical Drive (Sony DRU870S 24x DVD+/-RW Dual Layer ... - Retail) =
$40.50

TOTAL = $752.74 = €523.18 = £470.78

I can't find any cheaper RAM right now ... I'm not sure if all of this hardware is compatible with eachother... Obviously i would like to have it as cheap as possible. One problem is that i live in The Netherlands and i can't order from some sites like Newegg for example. Advice please on what to change, what's good, what's bad, what i could get cheaper etc please .

Thanks