Problem starting Congo Offline on PC

I have installed Congo offline V4.1 on a PC but the program does not manage to star up.  When I try to run it the computer thinks about it for few seconds and then nothing.

PC spec as follows:
Acer Vertion X490G
Running Windows 7
Intel Core i34 CPU 550@3.2GHz
2GB RAM
32 bit operation system

Could I be missing a particular windows driver or add on to enable the program to run?

Thanks,
Orri 

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