How is the remote file hosted? Windows share, http, ftp? If you're using the Gnome Desktop, you should be able to click the "Places" menu and click "Connect to Server" and that's a pretty good all in one tool for connecting to remote servers. Even if you're not, typing the url to the server into your file browser should work:
There's also command line tools, but I don't want to get too in depth on everything not knowing exactly how you're trying to access the file.