few days ago i download a software from ioffer, click the link and download to my documents. but when i try to install in my computer its say that ''dwmapi.dll is not here. they can;t find the module. i look in google about that dll, but i do not understand nothing. A company jump to offer installation of all missing dll's and clear the register for 29.00 dollars. what do you think. how i can solve this problem. thanks in advance.