Need keyboard driver for vista

Hi there! Well I have just bought a multimedia keyboard.Understandbly,it is for windows XP and not for vista.Whenever I start my computer,it asks me to download the keyboard driver.Of course I don't have it since I didn't find it with the product I bought.I TRIED and RETRIED to find it in the manufacturer's website,but in vain.Therefore,I tried Google until I came across your website which is very amazing indeed.I mean you are doing a great job there.Hopefully,you won't let me down as far as my request is concerned! THANKS a million in advance.PS: Please answer as very soon as possible. model: x5tech/XK-2918