Thanks Sidineik

There is nothing wrong with your English. It is perfectly fine. I asked you because I could not locate the file. Thanks Sidineik. I will get back to you . I am using XP SP2 ..its pretty old but earlier when I had installed Dynsim 4.2 , it was working fine. Recently I had to format my system and with formatting brought all these new problems. Thanks. I will try everything that you suggested and will get back to you whatever is the result. Thanks again. I am happy .