You are far better using transmission via the WEB-UI.apt-get install transmission-daemon
MAKE SURE TRANSMISSION-DAEMON IS NOT RUNNING WHEN YOU EDIT THE FILE!! All the changes get lost!!
Stop the transmission daemon using: /etc/init.d/transmission-daemon stop
You will then need to configure the settings:nano /etc/transmission-daemon/settings.json
You will like need to edit the following settings to allow remote LAN access : (here is snippet of mine as an example that assumes your local lan is 192.168.1.x based:)
You can then save the file, start transmission-darmon, in the same way you stopped it (changing stop for start obviously). And then access the Transmission client via your web browser on port 9091http://my-sheeva-ip:9091/transmission/web/