GUI file transfer vi SSH

I have a situation where I need to allow a group of non-technical users to be able to browse/copy/retrieve arbitrary files to and from a reasonably secure remote server. I am trying reaaly hard not to have to put an FTP server on the machine, and SSH/SCP is my preferred technology. This is no problem for the users who will be doing the job from Windows boxes - WinSCP does the job nicely. However a couple of users need to do this from linux boxes, but I can't find a gui front end to do the job. Basically it has to be as simple as a Windows Explorer/Konquerer interface. Any ideas? -- Phil Driscoll