G/day fellow simmers,      When i first started flight simming, and not knowing any better i purchased the box version of capt 727, ive since then got the d/loaded versions of the capt 707and the 757 from capt sim site, which i dont have any problems with, apart from some sound issues, which is down to my laptop. What i wanted to know is what would be the correct procedure to uninstall the boxed version, and replace it with the d/loaded version. The 707 and the 727 are my favorites, but i have some horrible sounds from the 727, and i have to reload it to fix the sounds, i dont have this problem with the 707 and the 757. So if anybody can me what the correct procedure to uninstall the boxed and download the 727 capt that would be great  thanks  BTW cant wait for the 737  :)