plink user@host -m local_script.sh

C:\> type mount.sh  
whoami  
hostname  
/usr/sbin/mount -t iso9660 -o ro /dev/cdrom /mnt  
/usr/sbin/mount | grep mnt  
C:\> plink remoteuser@remotehost -pw secret -m mount.sh  
remoteuser  
remotehost  
/dev/cdrom on /mnt type iso9660 (ro)