After some number of years, my windows machine has inexplicably slowed down with basic operations, such as launching a file, opening a known file type, browsing the filesystem, etc. I've run virus-scan and ad-ware scan. I think it's time to do a re-install, but now I have so much personal data I take for granted, I'm going to have problems migrating everything. Offhand, I have my firefox, thunderbird, skype, filezilla, cygwin, etc.
I am going to put a new drive in the system which will be the OS target. Then, my old OS drive will be a secondary drive on the system available for pulling data. Even then, I'm not sure that simple file copying will allow me to migrate my data from the old to the new system.
Is there any tool or procedure which can ease my pain?