hi there, i'm a non US. got my KF couple a days ago. I have no no WiFi around. I have PC with internet and my KF. I downloaded a few .apk apps on my PC. I am copying those .apk apps from PC to my kindle via usb -- in documents folder or other folders at times. but i can't view them. probably i am NOT copying the .apk files in the proper directory. where can i correctly copy my .apk files fro PC to the KF and then install them? could any one help pls?