Although I didn't really want to format my USB HDD to ext3, I did so (from NTFS) per everyone's recommendations. I installed Ext2Fsd so that I can see ext3 in Windows 7. With my USB HDD plugged directly to my Desktop, I was able to create folders and moved all my files over. When I connect the USB HDD to the RT-N66U Router, I can see all my files, mapped my drive, and I can create folders that are not in any other folder (I can create folders in the root directory). However, inside already existing folders, I cannot move or create folders - It says "You need permission to perform this action." How do I fix this? I was able to create folders within other folders when the USB HDD is plugged directly into the desktop. What happened? Any help would be appreciated.