I'm confused. I used my Win7 PC to root this A500 without any issues at all. But when I connect it to the A500 to view files and folders on the A500's SD card, I am seeing some inexplicable results. If I create a new folder in /mnt/external_SD, using Root Explorer running on the A500, it never shows up on the PC in Windows Explorer when connected by USB. If I create a new folder, using the PC connected by USB, in that same location on the A500's SD card, then it shows up in both locations. BUT..... if I put some files in the folder, while using Root Explorer in the tablet, the folder still appears to be EMPTY when viewed on the PC, even after refreshing the view??? I have a suspicion this may be some kind of "permissions" issue, but I don't know what to do to fix it. The files I am trying to transfer over to the PC under my current project are the specific*.ogg audio files which are used during on-screen typing on the tablet. I like the sound feedback while typing, but I want it to be at a quieter level. None of the volume settings on the tablet affect the playing of those sounds. So I am going to copy them over to my PC, and do some audio kitchen magic on them to reduce their native volume by 50%, and then copy them back into position on the tablet (I backed up the originals). I managed to send the files in a zip file by email to my PC. I can send the modified versions back the same way. But I would like to know what is going on with the PC and tablet not seeing certain folders and files that I make on either device. I've never seen that happen on either of my Android phones. However, the tablet, when connected by USB to my PC, also doesn't seem to require the "Safely Disconnect" issue, and there is no mention of USB being connected in the notification area of the tablet, like I would see on one of the smartphones. When preparing to root I had to install the PC driver so the PC would see the phone. I got that driver in with all the other files provided in the XDA forum thread I used for rooting. But I see that Acer has a couple of USB drivers for download on their support site. Do I need to also install one of those?