How can I set the utf-8 unicode or charset ISO-8859-7 on my dynamic web page? To give you some feedback: when I'm creating the page on my editor (btw I use Dreamweaver) and typing some text, in greek, inside a <p> tag everything looks fine, but when I preview it on the browser (firefox) all the text turns into strange symbols with no meaning at all

Any help would be appreciated.
P.S Btw jacek this maybe also a good idea for a video tutorial