tell NSIS to download a file

Is it possible to create a NSIS script that does the following: when the end-user runs the install.exe, the script goes to some web site and downloads the necessary files from there?

Thanks for any advice!

You can use the built in nsisdl: function, which is you can access from a section or custom function:

There are also ther plugins for downloading files e.g. Inetc http://nsis.sourceforge.net/Inetc_plug-in