Do you mean Internet Explorer 7? You can download it at microsoft.com for free if you have a Genuine Copy of Windows. But if you dont have one, maybe you can try reading my tutorial on how to make your pirated copy of Windows into a genuine one.
Here: [b][url=http://theftalk.com/t1136-Bypassing-Patching-your-%27Genuine%27.html]Bypassing WGA and Patching your Win OS as 'Genuine'[/url][/b]