Internet Explorer 7 does not work on Windows 7. Internet Explorer 8 is pretty much identical to Internet Explorer 7, so you should be able to view whatever site you want to in that version.
If your computer currently has Internet Explorer 9 installed, try uninstalling it:
How do I install or *uninstall Internet Explorer 9*?
Your computer will be automatically restored back to Internet Explorer 8.
If you continue experience any problems viewing websites, try setting your web browser to compatibility mode:
Introducing *Compatibility View* - IEBlog - Site Home - MSDN Blogs
Please note, if you using a 64 bit version of Windows 7, you need to use the 32 bit version of Internet Explorer 8 or 9 that is included with the operating system. Adobe Flash Player does not support 64 bit version of Internet Explorer in Windows 7 at this time.
Click Start > All Programs > Click Internet Explorer (the one that is not listed as 64 bit)
Adobe Flash Player is not supported for playback in a 64-bit browser
http://kb2.adobe.com/cps/000/6b3af6c9.html
I have Windows 7 64-bit and need to use Internet Explorer 32-bit