Create a directory on your machine to use as a mount point for the share:
sudo mkdir /media/yoursharename
Then use the mount command to map a Windows share to the mount point you just created:
sudo mount -t cifs -o username=nicorellius //server/sharename /media/yoursharename
You should now be to access the share from your /media/yoursharename mount point.
The easiest way to do this would be to open a terminal and use wget:
$ wget ftp://ftp.mysite.com/path/to/file
You need to replace "path/to/file/ with the path of the file you want to download. That is, the address where the file is found on the disk. So, to get a file called file.txt that is in sub directory foo of directory bar, you would write:
$ wget ftp://ftp.mysite.com/foo/bar/file.txt
If your ftp server requires a username and password:
$ wget ftp://username:password@ftp.mysite.com/foo/bar/file.txt
Replacing "username" and "password" with your actual username and password. Do not include the $ in any of these commands.
From the wget man page:
GNU Wget is a free utility for non-interactive download of files from
the Web. It supports HTTP, HTTPS, and FTP protocols, as well as
retrieval through HTTP proxies.
You can also use ftp from the command line:
$ ftp ftp.mysite.com
Enter your user name and password, then use put to upload the file:
ftp>put local_file remote_file
For example:
ftp>put Downloads/List/Song.mp3 Song.mp3
Do not include the ftp> in your command. That just indicates the ftp prompt.
Finally, you either use a normal browser (eg firefox) or install a graphical ftp client. My personal favorite is gftp:
$ sudo apt-get install gftp
Oh, and you are not using Ubuntu Software Center 2.0.7. That is just Ubuntu's software management app.
Note on terminology
When a terminal command is given, the symbol $ is used to indicate that it is a terminal command. See here for a discussion. It is not part of the actuall command. So, to tell you to run the command ls, I would write $ ls. You, however, should only type ls, without the $.
Best Answer
Open Nautilus("File Browser"). File->Connect to server. Choose FTP (with login) and enter the right information and add something in the "bookmark name" field. Then you can access the FTP server, browse it and edit the files directly.