Grab files from a FTP server with ASP.NET

I am trying to implement a function as follows:

There will be a button on the page that is named "Updated include files". This button when would run code to pull two files from an ftp server. This is where I am asking alittle advice on the best way to do this in code.

I would have a username and password embedded in the code to authenticate to the FTP server and then grab the two files and copy them to a folder in the website.

Another item would be to check and make sure the files exist on the FTP connections and if not abort etc.

Any tips or examples on how to do this would be appreciated.

Happy Holidays.
...