You must have a unicode font that supports polytonic greek (see Unicode Polytonic Greek Fonts, for example) to see the Greek properly. If you see a bunch of boxes, you probably do not have a unicode font installed.
The tools I am writing are works in progress, and they are for entertainment purposes only. Use them at your own risk. If you do find any errors, please let me know.
Mouse over to see answers. IE users will have to double-click at the words to see them (due to deficiencies in IE). Probably you should consider getting a modern browser such as firefox.