>>Hi Terry,
>>
>>You can find info about DLLs in MS DLL Help Database at
>
>>http://support.microsoft.com/default.aspx?scid=/servicedesks/fileversion/dllinfo.asp
>
>
>Thanks Sergey!
>This web site helped. I found that these two DLLs are installed
>by all recent versions of Windows starting with Win 95 OSR 2.

They're also updated by IE installations.