A 'repairer' - supposedly an expert(?) has LOST the  WLDCore.dll  from the registry(?) on my computer. I am toying with uninstalling "Windows Live Mail" and then re-installing.   BUT - how do I do this and will I lose any emails ie:  Hotmail and 3 *** Email address is removed for privacy ***' mail addresses?

[Original subject: Windows Live mail]