Corel X5 crashes on Open. A.R.M. error.

I have installed on my Dell Vostro laptop a trial copy of Corel X5 on a recent formatted XP SP3 system, but everytime I start the program it crashes delivering a A.R.M. message.

I search the web and found that it is due to a Hex registry problem which I fixed but I stil have the same situation, any ideas how to solve this???? I'm pulling my hair, it has become a challange now