Key authentication between solaris & windows server.

Hi Gurus

I have a solaris box from which i will have to sftp into a windows box.
I have installed core ftp server in the windows box and so am able to log in.

My problem is that,I have to enable password less authentication between solaris box and this core ftp server. How do i do this?

I have generated a id_dsa.pub file in the solaris box. But where shud i put this pub file(key) in the Core FTP server.

Please help.

HG

Core Ftp server or the Core Ftp application tool?
some online tips to use the Core Ftp tool:http://www.coreftp.com/doc/
And Im not sure if it uses any sort of certificate authentication methods.