I have a Samsung Replenish SPH-580 and I want to use the PDANET app, in which I down loaded to both the macbook and my cell phone, so I can get internet on either my Sony Vaio or Macbook Air laptop. However I have looked up different sites and I cant seem to find an answer as to why I keep getting this error window which says, Interface Not Found, on my Macbook. I'm not very computer savy so I cant configure this thing. Can someone please give me a detailed step by step guide as to how to get this problem resolved? Thank you! - Shirl!!