i have been trying to get my jet dst working and i am on my 3rd usb to serial connector and the jet box will not communicate with my computer but the light on the box says its working. i have a hp pavillion laptop and i am running 64 bit vista and have been told that is my problem more than once, i am pretty much done buying connectors and do not want to buy a new laptop to tune my truck. has any one else had this problem or want to buy a dst tuner? from what i have herd the jet programming is not the best but is pretty decent, jets customer service dept. has been pretty helpful but still has not got me anywhere. any one have any suggestions? and how dose the nelsons tune work? (getting the computer and ect.) and how much $ and deposit? im running out of time on getting the computer part of my build going and im ready to get my avalanche supercharged. thanks...