From the Finder, select the menu Go -> Connect to Server... (or just type Command-K).
Changed:
< <
For "Server Address", enter afp://hgwells.nevis.columbia.edu and click the "Connect" button.
> >
For "Server Address", enter smb://hgwells.nevis.columbia.edu and click the "Connect" button.
You'll be prompted for an account name and password:
The account name to enter is your Nevis Linux cluster account name, followed by @nevis.columbia.edu; e.g., if your account name is jsmith, then enter jsmith@nevis.columbia.edu. This is not an email address (if you care, it's your LDAP credential); do not type in your normal email address even if you never use your Nevis email address.