If ASP.NET is installed on the server already and you have a virtual directory (or Web Site) set up for your application you can just use XCopy deployment.
Since MM will work with files either in the GAC or copied local make sure that you change your project settings so that the MM assemblies are copied local, which should dump them into the BIN directory of your Web application.
You should need to do deploy only your Web directory (ASPX pages, global.asax, web.config etc.) plus any Web page sub dirs and the bin directory. There's no need to copy any sub-project files since those will compile and as long as you set them to copy local they will all be in the BIN directory.
+++ Rick ---
>I just had to renew a hosting account and found that godaddy.com is doing an ASP.NET site for linux rates. Includes SQL Server too!
>
>So how do you deploy a MM.NET app on a server that you can't run an installer on?