Travis - when you say "pretty big"... just
how big?
And what format is it encoded in?
Most websites where you can upload video will cost you something. I, for example, use my .mac account... but I am guessing you probably use a Windows PC rather than Mac?
Anyway, most websites allow you to buy a certain amount of space for file uploading, but a video of any length more than a few minutes will probably be several GB, which can get fairly expensive!
I usually make a shortened version of my videos for the web, maybe 2 or 3GB max, and encode them in Hi-res Quicktime format (mpeg3).
Otherwise, from a cost standpoint, tell your family they have to wait for you to send them a DVD copy.
Hope this helps !!
'Beano'