Great, except that the EOSinfo app does not work with newer cameras - i.e. the 7D, T1i/500D, T2i/550D, and 60D (nor does it work with 1-series bodies). So unfortunately, that won't work for the OP.
However, the shutter count on a 7D
, 500D, 550D, and some 1-series bodies can
be checked with gPhoto2
(I don't think the 60D has been added yet). But, gPhoto2 runs only in a Unix shell, meaning you have to have a Mac or a Linux box to use it (and also some knowledge of working with a command-line interface, which you probably have if you're running Linux, but might not if you're a 'typical' Mac user).