http://mirror.pacific.net.au/linux/f...386/os/Fedora/
can supply both libusb and libusb-0.1.12-7.fc7.i386.rpm and
libusb-devel-0.1.12-7.fc7.i386.rpm as I guess you need both.
root@user#rpm -Uvh 'packagename'.rpm will install the packages.
Replace 'packagename' with the name of the package you want to install.