1. In Dolphin, Right click an empty spot on the "Places" sidebar and click "Add Entry..."
2. Give the place a name in the "Label" box
3. In the location box, type fish://user@ipaddress where "user" is the a username on the remote machine and "ipaddress" is that machine's ip address (ex: 192.168.0.1)
4. Click Ok
You can now user that computer like any other external drive or folder in Dolphin.
Also check out parnote's excellent SSH magazine article
in the Feb. edition of the PCLinuxOS magazine.
His article is what got me into SSH in the first place.