sftp file transfer issue

Hi,

I've been getting issue in SFTP file transfer process on windows 2003
server. The batch work fine when I try to execute the job manually.
However, when I try to run the same job thru Windows task scheduler then
it fails. Basically, in task scheduler, it is not able to recognize the
id_dsa key which is available on c:\document settings
\profile\.ssh\id_dsa.

Any idea , how to use the SFTP option for identifying the id_dsa key?

Any help on this would be highly appreciated.

script : @ECHO OFF
sftp -v -b "C:\sched\scripts\bxxxxx\bxxxx.txt"
[email protected]

This is v mode output

Connecting to elink-sshftp.xxxxxxx.com...
OpenSSH_3.7.1p1, SSH protocols 1.5/2.0, OpenSSL 0.9.7b 10 Apr 2003
debug1: Reading configuration data /etc/ssh_config
debug1: Connecting to elink-sshftp.xxxxx.com [171xxxx130] port 22.
debug1: Connection established.
debug1: identity file /.ssh/id_rsa type -1
debug1: identity file /.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version
Connect:Enterprise_
UNIX_2.4.02
debug1: no match: Connect:Enterprise_UNIX_2.4.02
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.7.1p1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client aes128-cbc hmac-sha1 none
debug1: kex: client->server aes128-cbc hmac-sha1 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug1: Host 'elink-sshftp.com' is known and matches the RSA host
key.
debug1: Found key in /.ssh/known_hosts:2
debug1: ssh_rsa_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue:
publickey,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /.ssh/id_rsa
debug1: Trying private key: /.ssh/id_dsa
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue:
publickey,keyboard-interactive
debug1: No more authentication methods to try.
Permission denied (publickey,keyboard-interactive).
debug1: Calling cleanup 0x41c120(0x0)
Connection closed
Press any key to continue . . .

Thanks
Upkar