The links are both safe download locations for Microsoft Security Essentials. The second includes another link to click here if the download does not start.
However, you have posted for assistance here and you are already receiving help from jntkwx.
Since you are now receiving help from the Malware Response Team, you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc) unless advised by a Malware Response Team member...nor should you continue to ask for help elsewhere. Doing so can result in system changes which may not show it the log(s) you already posted. Further, any modifications you make on your own may cause confusion for the member assisting you and could complicate the malware removal process or make things worst which would extend the time it takes to clean your computer.
The Malware Response Team should be the only members that you take advice from, until they have verified your log as clean.
You can read these topics while waiting for a reply but do not make any changes.
Choosing an Anti-Virus Program
Supplementing your Anti-Virus Program with Anti-Malware Tools
To avoid confusion, I am closing this topic.