Question : how to create a create script for a new login

how to create a create script for a new  login and it needs to have the same privileges as a current login.
 

Answer : how to create a create script for a new login

Check out the examples here to Create a new login:

http://msdn.microsoft.com/en-us/library/ms189751.aspx

Not sure what you meant by Current login, so kindly explain to help you out..