Okay so my computer has two hard disks, C:\ which contains the OS and D:\ with all of my personal files and applications. The idea was to keep them separate so I could easily switch to a new OS, but C:\ ended up getting cluttered with a bunch of rubbish so I chose to go with a clean install when I jumped on the Windows 7 bandwagon. Now all the applications I installed to D:\ are still there but my computer's not seeing them, which I guess is because I have a new registry now. Is there any way to 'recover' the applications using the files I already have or will I have to delete all of them and reinstall everything from scratch? ibyoushouldhaveupgraded.txt EDIT: I've just discovered the Windows.Old folder that contains over 70gb of information from Program Files, how do I put them to use?