VBA Web Query with Username/Password

I'm looking for detailed information on how to use VBA to grab data
from a website requiring a username/password login. Mike posted a
similar question some time ago and he was told that it is tricky and it
depends on the website. How about these two websites? Is there a
way to "fake it" for these sites?

https://www.comscore.com/login/default.pli?
http://www.nielsen-netratings.com/login/sl_nvw2.htm

Or is there a workaround that combines VBA and some other
language or piece of software? I realize that I'm grasping here...!

I am ony a VBA beginner but I am confident I can write the necessary
code after having logged in! Any help would be greatly appreciated!
Many thanks.