Good day all of u ....
i have 8 fm 10 images rejected in SS with this reason "Noise--Noise, film grain, over-sharpening, or artifacts at full size" and i cant take the same photos again with low ISO settings to reduce the noise ...
what can i do to remove the noise fm my images & upload them again & get accepted as i don't know which parts in the images has noise 
Thanx in advance
Karim farah
Saying you don't know which part of your image has noise suggests to me that you don't know what noise is, what it looks like or how/where to look for it. Until you know this, noise reduction software or blurring techniques will be of little value. First I'd suggest you do a Google search for the topic photographic noise and artifacts. There are several excellent sites that explain what it is, where it is most likely to be found and how to avoid it. Once you have a better understanding of this topic, go back and look at your images at 100% using the techniques you found during your search.
Once you can see it, then you can decide what is the best tool to remove it, if that's at all possible. This can range from the various blurring options in Photoshop to noise elimination software such as Noise Ninja, Noiseware, Neat Image, and others. You only want to work on areas that actually have noise. Avoid applying any noise reduction to the image as a whole. The danger is that it is very easy to over use noise reduction, resulting in an image that looks plastic and earning you a "rejected for overfiltering" rejection.
You might also post this question, along with some of the rejected images, in the SS critiques forum. There are several people there who can help identify where the noise most likely is and different suggestions on how to correct it.