for the time being you can hold down the Ctrl key while clicking on the above link, then choose "Download Linked File" and it should be in your Downloads folder. do you have any techies near you who would be kind enough to show you how to ftp a file?
otherwise: you can also copy the line ftp://ftp.astro.com/pub/swisseph/ephe/ast1/se01930s.se1
into the url field of firefox and it will ask you where to put the file.
do you at least have firefox?