If you don't have an empty box and a "browse"
button next to "filename to send" down below, sorry, your browser
won't let you use this form.
Just email it as usual.
This page also only works for MS Word "version 8" files (Word97 or later, but not Word2007's native format).
And not always at that. Try it and see how it goes. :-)
(For Word2007, try this page.)