Difference between .REG and .CKU file

gopal_787's Avatar, Join Date: Jan 2008
Light Poster

Does anyone know the difference between a .REG file and a .CKU file?? if so what does the .CKU file do and where is it used...
pradeep's Avatar, Join Date: Apr 2005
Team Leader
There is no such registered extension as .CKU, might be a applications custom extension or a spyware.