How can I retrieve data from entourage X in Mountain Lion?

My entourage X is not accessible anymore ever since I have installed Mountain Lion.

(It has a white mark over it to indicate it won't even launch)

I know the best solution would be to go back using the time machine and export the mails to another version of outlook then reinstall Mountain Lion but that's not my option.

I tried to search .mbox using apple mail app but I have little success (it's been searching for over half an hour now).

Is thre anyways I can make entourage X work or retrieve data from entourage X so that I can access the data in apple mail or in outlook?

Please help!! I have so many work details I have saved in entourage... 😟

An idea: do you think I can install Snow leopard into my external HDD, move my old MS office X into it and try to retrieve the mails?

Please help!