Try putting the old card back in and doing a system restore back to before you started all this. More than likely, when uninstalling the current (old) driver, you removed some files or registry tags that were used by other devices in your system -- usually shared dll's. During uninstall, you are usually prompted that "you are about to remove a file that may be shared by other programs". You shouldn't have to uninstall the drivers and software, but if you do, it's best to leave those shared files in tact, as they have no effect on subsequent installations. You may have to go so far as to reinstall the old driver from the CD, or use system properties to roll back to the last known working driver. Before changing to the new card, assuming you've got everything working again, go into system properties, display adapter, and right click on the old video card; pick uninstall then shut the system down and replace with the new card. On re-boot, don't let the system install the driver for you, pick cancel, then run your new installtion CD. Once you've got that up and running you can go back and uninstall the old software, if the new install doesn't do it for you automatically, which it will usually do if there's a conflict. Good luck. MM