Hola
Podría ser algo como esto
Código asp:
Ver originalsubcarpeta = Request.QueryString("id")
Set objFSO = CreateObject("Scripting.FileSystemObject")
ruta = Request.ServerVariables("APPL_PHYSICAL_PATH") & "carpeta\" & subcarpeta
Set objFolder = objFSO.GetFolder(ruta)
response.write "<br>"&objFolder.Path&"<br>"&"<br>"
Set colFiles = objFolder.Files
For Each objFile in colFiles
%>
<img src="./carpeta/<%=subcarpeta%>/<%=objFile.Name%>"/><br>
<%
Next
Suerte