Hi Philip
You can buy an adaptor from aguy that makes them in Austria , to make the the fancy cable release / timer made for the 20D etc fit the 300D and 350D.
I bought one for about $35 works great , some people just cut the end off and solder a micro jack plug but if you upgrade to a 5D or 30D you would need to reverse this . better to buy the adaptor , found the guy on cloudy nights classifieds.
Zane
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