Root [Sprint] Driver files?

[hortstu]

I'm following the how to video on rooting with cf auto root. Everything's going fine except I'm not getting the yellow box. QBking says in passing make sure you have the driver files but then glosses right over it. I don't know where to get these files or where to put them once I find them. On the computer or the s4?

I need the yellow box! Can anyone help?
Thanks

 

[hortstu]

I found the driver files here.
http://forum.xda-developers.com/showthread.php?t=961956

Seems pretty self explanatory but they took forever to install!