Can someone help me find a driver? (sata for asus MB)

Hello,
I'm trying to reinstall my computer, but when i bought it from eBay, 2 weeks ago, I didn't geta cd with the drivers.
Now as some of you might now, the windows installation CD, doesn't have drivers for sata HDD.
So I need to place this driver in a floppy, problem is, I've been searchng it for 4 days, and I can't find this driver.
So I'd really appreciate it if someone could help me find it.
My motherboard is an asus k8u-x.
Now i did go to the official site, support.asus.com/download/download.aspx?SLanguage=en-us

I managed to find a way to my motherboard, but i can't show you guys now, because the link isn't working for me.
Anyway, the only sata drive i found was for the linux os.
Can someone link me to where i can find the files i need to place on the floppy?
Thanks!