You have 3 different choices for accessing the HITRAN ftp-site:
1. ---------------
FTP--> cfa-ftp.harvard.edu
User--> anonymous
Password--> your e-mail address
Then change directories--> cd pub/hitran04
2. --------------------
One can also access the data using a web browser. Just type
"ftp://cfa-ftp.harvard.edu/pub/hitran04/" for the location.
(You may have to configure your browser to send your e-mail
address as anonymous ftp password.)
3. ----------------------
Alternatively, if you have difficulty using ftp, you can access the
site via http by going to the url:
http://cfa-www.Harvard.edu/HITRAN/hitrandata04/
You will then be prompted for:
username --> HITRAN
password --> getdata
(note that some items are case sensitive, such as "hitrandata" and
"getdata")