Accessing old ACS data on FTP site?

Hi All,

 

Does anyone have instructions or a video you could refer me to on how to access older ACS data through their FTP site?  Of course, I have some old data I need to pull just in time for the site to go offline yesterday!  I've been poking around the FTP site but it is pretty nebulous.  Any help would be greatly appreciated!

 

Bill Byrnes