thank you for your answer.
i have one more queston, when i try to debug the dbeng50.exe using windiows debugging tool.i need to give the symbol path of dbeng50.exe.(.pdb file)
i have no idea where to get this .pdb file. i searched the net, i could see people telling it should be provided by software provider only.
the pdb file is created while they compile the executable ( it has all the debug points in it).