I just need to decode a URL, for example, replace %2E with . I can hack out a method if one isn't build in, but my assumption is that there must be a URL decoding tool already existing.
No.
But here's one: URL Encoder and Decoder for VB
Or something along the lines of (possibly not complete):
Public Function URLDecode(ByVal strEncodedURL As String) As String
Dim str As String
str = strEncodedURL
If Len(str) > 0 Then
str = Replace(str, "&", " & ")
str = Replace(str, "", Chr(39))
str = Replace(str, "&quo", Chr(34))
str = Replace(str, "+", " ")
str = Replace(str, "%2A", "*")
str = Replace(str, "%40", "@")
str = Replace(str, "%2D", "-")
str = Replace(str, "%5F", "_")
str = Replace(str, "%2B", "+")
str = Replace(str, "%2E", ".")
str = Replace(str, "%2F", "/")
URLDecode = str
End If
End Function
Also, take a look at How can I URL encode a string in Excel VBA?