|There is no way you could have "accidentally" deleted the actual Internet Explorer software.|
What you probably did was delete just the shortcut for it, that is something that can be done accidentally. The software itself is still intact.
Just use the search tool in Windows to find iexplore.exe, then create a new shortcut for it.
I know how to tell you how to do it in Windows 7, but not Windows 8 because I've never used it much.
message edited by phil22