jpg resize

Hi guys,

I am setting up a webcam for a nursery school whereby the parents can log onto
the website and have live feed (pics) of there children throughout the day (if
you are a parent you will understand :) ).

I have a Sony Handycam plugged into a kworld tv/capture card, on Windows XP SP/2.
That is not a 
problem (for now) as the capture card is taking pics every 10 seconds and
storing it on a samba share that runs Debian 5.04.

These pics are then send via ftp to the website. Now, my problem is that each pic
is greater than 500k, which means that I have a bottleneck.

Is there a way to send these pics to imagemagick to cut down on their size
before I ftp them?

Thanks

Danny