Scp windows to linux

Im trying to make a script that connects automatly and transfers a backup copy from a windows to linux. The problem is the keys, anytime the script connect to the host (linux) it wants the user password. I tryed to use the Putty gen, but i dont know if i do it correctly. I make a private key but i have not idea what i need to do with the key.

Can anyone help me? thanks

I did it :)

How did you do it? I'm trying to do the samething and am running into problems.

How did you do it? I'm trying to do the samething and am running into problems.

Just save the key unprotected.