accordance with the title above, here's how:
just click it
for 32bit:
http://www.go-mono.com/moonlight/downloads/2.3/novell-moonlight-2.3-i586.xpi
for 64bit:
http://www.go-mono.com/moonlight/downloads/2.3/novell-moonlight-2.3-x86_64.xpi
if you have pop-up, firefox prevented this site (www.blabladomainname.com) from asking you to install software on your computer, just click allow.
note:
Moonlight
Silverlight for Linux: a free plug-in.
Bringing a new level of interactivity wherever the Web works.
Rich Internet Applications
Moonlight is an open source implementation of Microsoft Silverlight for Unix systems. With Moonlight you can access videos, applications and content created for Silverlight on Linux.
source: http://www.go-mono.com/moonlight/