Start→Run, type “regedit”
Find HKEY_LOCAL_MACHINE\SOFTWARE\PlayOnlineUS
Right click the folder and select “Export”
Copy all files to new PC
Copy the registration file you exported
Run the registration file to import the registration data
Do a search under playonline folder
Start → Run → cmd
Run this command: cd program files\playonline (if you install in this directory)
Run this command: dir /s *.dll
For each .dll file, type regsvr32 xxx.dll
(For example, regsvr32 FFXi.dll)
Enjoy the game