The final release of ASP.NET MVC 1.0 debuted at MIX and it's available for you to grab now.
The release notes describe a way to do a server install on machines where Visual Studio is not available. However, I've got a few corrections after trying it out.
First, the documentation says that it will execute a quiet install but leaves the quiet install switch out of the command example. The actual command you want is:
msiexec /i AspNetMVC1.msi /q /l*v mvc.log MVC_SERVER_INSTALL="YES"
Second, although it's not mentioned you do need to run the installer from an elevated command prompt rather than a normal command prompt. Otherwise, the installer will fail without an elevation prompt on account of being in quiet mode.
The latest information about ASP.NET MVC can be found in the list of supporting technologies.