how to make a dll available to user for download from my web site?

Hi,

how to make a dll available to user for download from my web site?

The dll is called CAPICOM and it s a microsoft dll. I need it to be downloaded by the user and registered on his machine, in order to do some client encryption stuff.

If I have the dll on my server, how to make the asp.net web page in order to alow the client browsing the site to download the dll file and register it on his local machine ?

Thanks :)