I've finally decided that it is time to splash some cash on new parts for my PC. I'm able to spend 400-500 euro (3000-4000 DKK). After this upgrade I will not be able to do any upgrades the next year, year and a half. I live in Denmark, which means that I'm not able to grab any overseas items.
Current setup:
CPU - AMD Phenom II X4 945
CPU cooler - stock
GPU - ATI Radeon HD 5750
PSU - Zalman 1000W
Mobo - ASRock M3A790GMH
HDD - 500gb Fujitsu
RAM - 4gb dual-channel DDR3 at 665MHz
Case - Stock midi tower
Let me know if you need more information
Thanks in advance