How to make a "export selection to PNG"?

Hi everyone,
I really need to export selected objects (or groups) to PNG... and I need it to be fast, i cant waste time exporting to PDF and converting in photoshop.
I made a script to do this, but the quality is soo poor... so what i want to know is:
-Is it possible to do this with the InDesign SDK?
...and if it is possible, how hard it would be?
Im not really a developer, so i want to know what i have to do, so i can ask a friend to do.... or something like that!
Thanks!
(sorry about my bad english)

InDesign CS4,
step 1. Create SnapshotUtilsEx() with addTransparencyAlpha is kTrue.
SnapshotUtilsEx fSnapshotUtilsEx
          = new SnapshotUtilsEx(
                itemUIDRef,      xScale, yScale, desiredRes, minRes, bleed,
               SnapshotUtilsEx::kCsRGB,
               kTrue, //bool8 addTransparencyAlpha ,
               kFalse);
step 2. Draw() with option ...
     fSnapshotUtilsEx.Draw( IShape::kPreviewMode|IShape::kPrinting );
step3. ExportImageToPNG
    IDFile fileSysFile = target png filename..
   InterfacePtr<IPMStream> pngStream(StreamUtil::CreateFileStreamWrite(fileSysFile, kOpenOut|kOpenTrunc));//, fileType, creator));
   if (pngStream == nil) {
   break;
   status = fSnapshotUtilsEx->ExportImageToPNG(pngStream);

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"Zhenhao Qi" <[email protected]> wrote in message
news:3fd4f634$[email protected]..
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