Q: We can't download iTunes for our computers! (Windows 7 64-bit)

Hi, I'd welcome some helpful advice for downloading iTunes for a computer with Windows 7 64 bit operating system. I have older computers with Windows Vista 32 bit systems and have no trouble either downloading or installing iTunes to them. However with two computers using Windows 7 64 bit systems I click on download iTunes then a screen comes up and tells me thanks for downloading iTunes, eventhough nothing has downloaded! No dialogue boxes come up and I don't have pop up blockers enabled on my browser (Internet Explorer} or on my antivirus! So I can't even download the blasted thing let alone install it! thank you for your consideration.