First : Edit all posts to use [code]tags instead of [QUOTE]tags.
The formatting gets terrible to look at, when you have long words like
====================================== , and then are using [QUOTE]tags.
You can also shorten the "=================================" words.
ATrpms are incompatible with other 3rd party repositories.
Better disable the ATrpm.repo.
..what about that "The OS will not know about it" ?
The rpm data base will remember all installed rpm packages, AFAIK.
Better try one more time : # yum install libusb-devel
It is fundamentally wrong to use # 'yum install libusb-devel-0.1.12-5.1.i386.rpm' !
Next : rpm -qa libusb-devel
Or : rpm -qa | grep libusb-devel
You can check the complete file list with : rpm -ql libusb-devel