Check the language settings in the control panel. You've probably got English US set as default.
These recommendations are based on my Pc which i built recently. Cost a bit more than 400 but should give you an idea.
Case: Antec P180 est.£70
Mobo: Single slot x16 Pci Gigabyte P35 est.£50
Intel Quad core est.£150
4 Gb RAM (requires 64 bit vista) est.£60
Graphics: ATI Radeon 4870 1Gb est.£200
Power: Min 600 Watt, preferrably a brand name.
Got various other accessories but thats what i use to get good performance for gaming.
Good Luck, just be careful handling components and you can't go wrong.