Some symbols may not show because your computer does not contain the font set and/or your browser is not set to the correct Character Encoding. Changing browser's encoding is usually done from its View Menu.
If you see squares or question marks instead of the symbol you need to make sure you have the language pack installed necessary to show the symbols.
Installing Windows XP Language Packs:
(depending on the version of XP you have, you may need to insert your WINDOWS XP SETUP CD) then go to Control Panel >> Add/Remove Programs >> Windows Components scroll down in the list and put a checkmark next to “language packs”. If you cant find that, then go here instead Control Panel >> Regional and Language Options >> Languages then made sure both boxes under Supplemental Language Support are checked. Click NEXT and then let it do its thing. You will probably then have to reboot.
Enabling International Support in Windows XP/Server 2003 Family:
http://www.microsoft...xpintlsupp.mspxHow to Configure Regional and Language Support for User Accounts:
https://www.microsof...reginalsup.mspxVista:
Install a display language:
http://windowshelp.m...a1a03f1033.mspxWindows Vista Ultimate language pack release information:
http://support.microsoft.com/kb/925471Installing Language Interface Packs:
http://technet.micro...278(WS.10).aspx