QNX momentics under linux

I am trying to install QNX Momentics under Fedora Linux Core 5, but i can’t get through the installation. When I install the sun JRE 1.5, i can see the installshield, but when the installation starts it quits with the message ‘jvm not found’. A search on the internet revealed that i should use j2re1.4.xx but when i download it from the sun site i get a checksum error when i try to install it.