I have never done IR before either. I just bought the filter and put it on. It makes a big difference which direction the light is coming from, and most of the ones taken in color mode did not come out well. But it is easy with this camera in monochrome. I believe it is the lack of an AA filter and the design of the sensor that makes it work with the Hoya filter so well. Other on this site may understand the technicalities better than I.
Love the IR. I used the Hoya filter on my Canon DSLR. I want to convert [remove the chip] from my old Powershot so that it shoots IR. but at 2mp not sure how much of a reward that would be. I wonder what pinhole/zone sieve would look like with IR film-- anyone ever do that?
These are well done and the increase in good performance at high ISO's is making the use of external IR filters easier. You still don't get focus though unless you go for a dedicated IR camera as Brian has explained. Mine is a Canon G5 which works as if you have visible light for composition and focus. A pro conversion is recommended as the auto focus needs to be adjusted for the longer wavelength of IR.
I bought my G5 on eBay from a private converter - cheaper than the mainstream operators.