I guess you are referring to load the content of the miniDV tape taken by HandyCam and then upload to Web, right?
If ur HandyCam has memory stick, you could copy the content of ur DV to MS first (Press REC while using your HandyCam to playback the DV), then use USB to transfer the MPEG to PC.
You could then use editing tools (e.g. Movie Maker) to further edit/compress your video
MPEG format is good enough for Web usage.
In addition to those sites mentioned by Joey, you could also try http://www.mymoviestar.com/. It could host up to 50MB of movies per account (20MB max for each movie)