tell application “Finder”
if exists disk “Shared_Vol” then
else
mount volume “afp://user@myserver.com/Shared_Vol”
end if
if exists disk “input” then
else
mount volume “smb://user:passw0rd@mywindowsbox.com/input”
end if
end tell

To run it from command line or crontab:

osascript theAppleScript.scpt