On certain 64bit Windows platforms you need 'Microsoft Visual C++ 2008 Redistributable Package (x64)' http://www.microsoft.com/download/en/details.aspx?id=2092 installed (see http://fusesource.com/issues/browse/ENTESB-37).

Also, Hiram mentioned on Windows XP 32bit you need the equivalent 32 bit patch installed from http://www.microsoft.com/download/en/details.aspx?id=29

We should add these to the system requirements.