I am on Windows Vista. I originally tried to install everything on my old Acer laptop and had HORRIBLE troubles getting my com ports to recognize anything let alone the arduino....moved to my wife's dell also running Vista. Everything loaded up like a dream come true. I dont understand how the example code pre-written off the website wont compile. I have touched NOTHING in it other than "upload" I have tried it with the board connected and un-connected. Same compile error. If I wrote it I would be checking my code, since these are the examples I would hope they would be correct.