Could you expand on your question? What do you mean by "sand"? Are you looking to smooth a grainy image?
a grainy image would most likely be photoshop, rather than illustrator.
But I can't make much sense of it either.
The only other thing I can think of, is optimising the file for print. I'm not too familiar with indesign for print, but I imagine it's pretty printer friendly.
.eps files, although large, are quite good for printers, as they are more the printer's 'language'. Not too sure about what options there are above illustrator 10 though - not all features are supported I think. You can export as .eps from illustrator through the 'save as' window.
pdf is also a good option I guess.
mhtahir, I think you need to elaborate a little