Windows XP setup and SATA

I'm helping to build a computer for my frien's niece. It's now time to install the OS (Windows XP). Unfortunately, Windows XP, being a several years old now, does not come with drivers for SATA. We need to to load these drivers through a floppy disk at the start of the installation. This is a major inconvenience. We didn't buy a floppy drive for the new computer. Who does these days?