Taking IR photos means that you need to use the tripod, compose, put the filter, take a test picture, correct the exposure, try again.... Luckily the 40D can autofocus with the filter on, since IR focuses at a different point as visible light. Another good way is to use live-view with a 10x factor and focus manually.
All this implies that you need time and a bit of peace which is not easy to get with 2 kids around. So this was the only time in the 2 months that I managed to take any IR pictures. I hope you like them.