What is this file cure? Get rid on a fresh install. WLM is the program that opens .eml files. Once you use third party software then you're scuppered in the end. That is the whole point of WLM. You back up your Mail and contacts to a folder and save to a usb or disc. Reinstall the OS and reinstall and use WLM to import again.
Use windows' own feature to associate files and not a third party software.
Bin 'FileCure', run Ccleaner and its reg cleaner. You've damaged a clean install already I think.
link, select "Default Windows 7 File Extension Types:"