This is not possible on x10Hosting, so you'll need a different host.
- Find an ASP.NET host - Google is your friend (make sure it supports the database you're using).
- Use the "Publish Web Site" button in Visual Studio to upload your site to their servers.
Edit:
I stand very much corrected - x10Hosting does support ASP.NET. Still, use the Publish Web Site feature of Visual Studio, with your x10Hosting FTP details.