Install procedure

I think the installer needs a bit of work. I upgraded to X7 and that all went fine, but the upgrade leaves X6 installed as well.  Fair enough, but when I uninstalled X6 to clean up my hard disk and purge the extra files the uninstaller for X6 seems to have uninstalled CWYW from my MS Office.  Easy enough to fix, I just reinstalled X7 and everything was fine, but there needs to be an option to uninstall the previous version or else a check on which components are still in use with the new software.