Second Copy 7 stores its profiles and settings information in a hidden file called "profiles.dat" under "\Documents and Settings\<Username>\Local Settings\Application Data\Centered Systems\Second Copy" folder. (where, <Username> is the currently logged in username.)
In Vista, Second Copy 7 profiles.dat file is stored under "\Users\<Username>\AppData\Local\Centered Systems\Second Copy" folder.
Second Copy 2000 stores its profiles and settings information in a hidden file called "profiles.dat" under "\Program Files\SecCopy" folder.