Thanx for the comments. Here's my final pc config.
Processor: Intel Core i5 750
http://www.directcanada.com/products/?sku=12200BD3101
Motherboard: Gigabyte P55M-UD4
http://www.directcanada.com/products/?sku=11830BD4190
Graphic card: XFX Radeon HD 5850
http://www.directcanada.com/products/?sku=15180BD6617&vpn=HD-585A-ZNFC&manufacture=XFX
Memory: OCZ 4GB DDR3 2X2GB DDR3-1333 CL 7-7-7-20
http://www.directcanada.com/products/?sku=13220BD4588
Hard drive: Western Digital Caviar Black 1TB SATA2 7200RPM
http://www.directcanada.com/products/?sku=25350DR7429
Power supply: OCZ ModXStream Pro 600W
http://www.directcanada.com/products/?sku=13220AC8686
DVD writer: LG GH22LS50 22X/22X DVD+-RW SATA DVD Writer
http://www.directcanada.com/products/?sku=12600DR0918
Case: Coolermaster Storm Sniper Black
http://www.directcanada.com/products/?sku=11130AC5720&vpn=SGC-6000-KXN1-GP&manufacture=COOLERMASTER
Mouse: Logitech G5 Laser
http://www.directcanada.com/products/?sku=1266157675G
Keyboard: Logitech Access Keyboard 600
http://www.directcanada.com/products/?sku=1266147851G
Screen: HD TV LG 32' (1920x1080)
Processor: Intel Core i5 750
http://www.directcanada.com/products/?sku=12200BD3101
Motherboard: Gigabyte P55M-UD4
http://www.directcanada.com/products/?sku=11830BD4190
Graphic card: XFX Radeon HD 5850
http://www.directcanada.com/products/?sku=15180BD6617&vpn=HD-585A-ZNFC&manufacture=XFX
Memory: OCZ 4GB DDR3 2X2GB DDR3-1333 CL 7-7-7-20
http://www.directcanada.com/products/?sku=13220BD4588
Hard drive: Western Digital Caviar Black 1TB SATA2 7200RPM
http://www.directcanada.com/products/?sku=25350DR7429
Power supply: OCZ ModXStream Pro 600W
http://www.directcanada.com/products/?sku=13220AC8686
DVD writer: LG GH22LS50 22X/22X DVD+-RW SATA DVD Writer
http://www.directcanada.com/products/?sku=12600DR0918
Case: Coolermaster Storm Sniper Black
http://www.directcanada.com/products/?sku=11130AC5720&vpn=SGC-6000-KXN1-GP&manufacture=COOLERMASTER
Mouse: Logitech G5 Laser
http://www.directcanada.com/products/?sku=1266157675G
Keyboard: Logitech Access Keyboard 600
http://www.directcanada.com/products/?sku=1266147851G
Screen: HD TV LG 32' (1920x1080)