Hi,
Have you tried the putty/plink freeware ssh/telnet package, it's available at:
http://www.chiark.greenend.org.uk/~sgtatham/putty/
You can send command line options to the putty program via the plink console program.
i.e.
plink myname@unixhost "acommand"
or
plink -ssh myname@unixhost "accomand" to enable ssh.
The only downside is that the user will still have to enter a password.
Hope this helps.
Andy Hibbins
