I'm running vista on my laptop and trying to use DHP. Some reason I cant get it to read the pcm. Program will start and register but thats it. I can look at downloaded bins. I've got power to it so thats not the problem. I've asked for help over on DHP forum and clubgp but no one seems able to help. So I may as well come home to a very active forum and lots of knowledge to see if some one here can help. Thanks

Well, many vista problems are solved by Right-Clicking on the program and selecting "Run as administrator"

You can also try right clicking, selecting properties, go to Compatibility and set it for Windows XP.

Yeah I've been through all of those. The consensus seems to be some people run it in vista with no problems and others cant. I hate not being able to use my good laptop for it but I guess maybe I can find a good used one with XP on it if I cant get it working. I've had this tuner since friday and haven't been able to enjoy my new toy.