Microsoft offers a free tool for this called WEFT - I haven't used it but it might well be useful for those who wish to do so.

http://www.microsoft.com/typography/web/embedding/default.htm?fname=%20&fsize=

Microsoft also used to offer 10 free fonts for webpages but unfortunately no longer do so.

Meryt, a point you might like to consider with fonts for display online - serif fonts like Times New Roman don't work as well as sans serif fonts. This page uses a sans serif font.