OpenSourceArmenia

Take a look at this site:

http://www.himnadram.org/

The Armenian part defines its own style sheet. Though the style sheet implies that you have "Arial AM" in your system, but that's fine because "Arial AM" can be considered a "generic" font like "Arial", for example (not to mention that it is the only Armenian screen-optimized font available). If your system still lacks "Arial AM" then Mozilla or Netscape would show you the pages with some other Armenian font.

Moreover, this site:

http://www.vost.am/

works entirely in ArmSCII-8 and allows you to enter data in HTML forms.