I have a Samsung Epic 4 and have downloaded both PDAnet and Easy tether. I can talk to my XP Sony laptop with Pdanet ( have not tried Easy tether on the laptop since the pdanet worked ok). I cannot load either program on my Dell Win 7. I'm told I have a USB composit device driver problem. I cannot load this driver. I may have a conflict with another device but but I can't find it. When I look at the Samsung in my "devices and printers" list it is there but trouble shooting says there is a problem with the Samsung Android Composite Device Driver but I am not able to reinstall it. Has anyone else seen this problem?