Hi,Just downloaded both 737s after having the QOS for a while. Understand I have to install the 37s first, so....do I uninstall the QOS with the windows uninstaller and then request another download of QOS from PMDG as I no longer have the original download from them...will they?thanks doug

Doug,If you've lost the original installer, you're gonna need to purchase the redownload service to get it back again...Here's a workaround though - go to FS9/Modules and rename PMDGOptions.dll to PMDGOptions.744. Now, install the NG, then at the very end after you've done all the updates for the NG, delete the PMDGOptions.dll that the NG installs and rename the other one back to PMDGOptions.dll - this should allow you to install the NG without uninstalling the 744.Please remember to back up your NG installer files or you're gonna be in the same situation of having to pay for the redownload of those as well if you need to reinstall them in the future.