Convert funny chars to ascii with VBA

Function TranslateChar(StrIn As String) As String
    
    ' This function may be used in Excel or Access, or in any VB/VBA project.
    
    ' Function evaluates an ANSI string that may have special characters, identified
    ' in the collection populated below.  If a special character is found, the function
    ' replaces that character with a designated replacement string (may be any number
    ' of characters).  There is no support for Unicode.
    
    ' The function conserves case, so if the special character is uppercase, then the
    ' first character of the replacement string will be uppercase as well.
    
    ' While the intent of this function is to "replace" characters with diacritical
    ' marks with their Roman alphabet equivalents (you should feel free to change the
    ' mapping below if you do not think it's right or it does not suit your purposes;
    ' I am no linguist).  However, you could use the code to replace any single ANSI
    ' character with whatever string you desire.
    
    Dim Counter As Long
    Dim coll As New Collection
    Dim Check As String
    Dim WasLower As Boolean
    Dim Letter As String
    
    ' Populate a Collection with the mapping.  The Key is the special character, and the
    ' Item is the replacement.  The key must always be a single character, but the item
    ' may be 1+ characters.  Use lower case in this list, and continue the list as
    ' needed.
    
    coll.Add Item:="a", Key:="á"
    coll.Add Item:="a", Key:="à"
    coll.Add Item:="a", Key:="â"
    coll.Add Item:="a", Key:="ã"
    coll.Add Item:="a", Key:="å"
    coll.Add Item:="a", Key:="ä"
    coll.Add Item:="ae", Key:="æ"
    coll.Add Item:="c", Key:="ç"
    coll.Add Item:="e", Key:="è"
    coll.Add Item:="e", Key:="é"
    coll.Add Item:="e", Key:="ê"
    coll.Add Item:="e", Key:="ë"
    coll.Add Item:="i", Key:="ì"
    coll.Add Item:="i", Key:="í"
    coll.Add Item:="i", Key:="î"
    coll.Add Item:="i", Key:="ï"
    coll.Add Item:="n", Key:="ñ"
    coll.Add Item:="o", Key:="ó"
    coll.Add Item:="o", Key:="ò"
    coll.Add Item:="o", Key:="õ"
    coll.Add Item:="o", Key:="ö"
    coll.Add Item:="o", Key:="ø"
    coll.Add Item:="oe", Key:="S"
    coll.Add Item:="ss", Key:="ß" ' German sharp s
    coll.Add Item:="th", Key:="ð" ' Old English eth
    coll.Add Item:="th", Key:="þ" ' Old English thorn
    coll.Add Item:="u", Key:="ù"
    coll.Add Item:="u", Key:="ú"
    coll.Add Item:="u", Key:="û"
    coll.Add Item:="u", Key:="ü"
    coll.Add Item:="y", Key:="ý"
    coll.Add Item:="y", Key:="ÿ"
    
    ' This entry is for illustration only!  You should remove before using!
    coll.Add Item:="dollar", Key:="$"
    
    ' Loop through string to look for special characters needing replacement
    
    For Counter = 1 To Len(StrIn)
        
        ' Look in collection to see if the current character being considered is a "special"
        ' character
        
        On Error Resume Next
        Letter = Mid(StrIn, Counter, 1)
        Check = coll(Letter)
        
        ' Check to see if original character was upper or lower case
        
        WasLower = (StrComp(Letter, LCase(Letter), vbBinaryCompare) = 0)
        
        ' If there was no error, that means character was in collection and thus is a
        ' special character needing replacement
        
        If Err <> 0 Then
            Err.Clear
            Check = Letter
        End If
        On Error GoTo 0
        
        ' If character was lower case, return the translation in lower case.  If upper case,
        ' return in proper case (first character capitalized)
        
        TranslateChar = TranslateChar & IIf(WasLower, LCase(Check), StrConv(Check, vbProperCase))
    Next
    
    ' Release object variable
    
    Set coll = Nothing
    
End Function
                                              

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