how far away from the camera will you be ?
here's a thought
if you have a laptop and are close enough there is no reason why you couldn't use the canon software that comes with the camera to remotely fire the shutter using a 5 or 10 meter usb cable
not to mention the advantages of using live view
i don't know if you can get away with using a straight 10 mtr usb cable but you can certainly us a 5 mtr extension cable with the usb cable supplied with the camera with no problems
after that you will be looking at a usb active repeater cable
something like this
http://www.cables2u.co.uk/active-rep...sb2-p-977.html
a quick fix for the remote you already have would be a strategically positioned small mirror to allow the infra red beam from the remote to be reflected on to the infra red sensor on the front of you camera