I've never used RoR, so I can't help you there....but I spend a large part of my time in front of a PuTTY terminal. Here's a quick how-to on connecting:
1) open putty.exe
2) In the host name field (the cursor will be there initially), type you server domain name or IP address
3) for the port, choose 22 if it's not already that
4) click OK
5) the screen will initially be back. The you'll get a prompt that says something like "login as: " (depends on the server) Type your account username and hit enter
6) Then it will say "[your_username_here]'s password: " This trips up a lot of newbies. Type in your password, and hit enter.
YOU WILL SEE NEITHER YOUR PASSWORD NOR **** WHILE YOU TYPE7) After you enter your pass, you'll get a command prompt, much like the one from windows' cmd.exe. Simple Linux commands are similar, but not identical. Here's a tutorial on getting started with the command prompt:
http://gd.tuwien.ac.at/linuxcommand.org/learning_the_shell.phpHope that helps. You can try private messaging Srirangan about looking at your RoR question -- he's got some experience using that technology.
-Matt