Below is the Instructions for making your XMAP Tuning Software compatible with Windows Vista operating system. For XMAP Software: Click on Start, Help & Support, Using Windows Vista Start Program Compatibility Wizard. Click to open. Click again. Click on Next. At the Options screen - Choose "I want to choose from list of programs". Click on Next. The computer will upload all the programs. The programs will be displayed as small icons. Double click on XMAP. At the options screen - click on XP, click on Next. For Radio Shack USB Cable: Repeat the proceduce outline above, but click on Radio Shack USB Cable from the programs list. Continue the procedure outline above. **Please note, we do not use Windows Vista in house so we have not run  the compatibility wizard. This has been passed on from a few customers that made it work. To Order: Call 830-438-2890 or fax at 830-438-8361. Copyright © 2006 BEGi. All rights reserved.