Do you have ssh/telnet access?
Either way this is perfect, you will have to upload some files, then you have access through an executable on your desktop.
You can edit and add cron jobs, but be sure you host allows this as the update won't go through otherwise. To be fair i have no idea what you need to do, so i'll give up. Use this program.
http://download.yousendit.com/2B15BEED06A37343 (37kb)