How can I change a FOR EACH loop to a DO WHILE loop?
I have this code...

PHP Code:

<%
For Each objFile In objFolder.Files                 
     If IsImgNotRegistered(objFile.Name)= true then%>
       <tr>
       <td>
       <%= objFile.Name%>
       </td>
       </tr>                                                
    <%                
     End if
Next
%> 


Actually this code is part of a file, used to fetch Image(.jpeg)
file and check wether it is registered or not.
The 'objFile' is the Image file
and objFolder.Files is the Folder.

How can I change it to a DO WHILE loop?

Thanks.

Whty would you want to?

What you'll need to do is set up a counter, set it to 0 before the loop, and increment it by one on each iteration of the loop. You can then use it to refer to elements in your array. The 'do while' clause will be something like 'DO WHILE MyCounter <= objFolder.Files.Count'

How can I arrange object ascending or descending?

PHP Code:

For Each objFile In objFolder.Files
                 response.write strObjFile 


the strObjFile is an object. its an object of jpeg file in a folder.

Minaki's right. You don't want to go to a do while loop if you can avoid it, because they're a lot more likely to turn into endless loops (a for loop still can if you screw up with your loop variable and use it inside of the loop, but that only happens once in a blue moon.)

What exactly are you trying to accomplish with that code? It looks like you're trying to find all of the JPGs in a folder.