Is there good and **easy to use** software out there that will let me save a copy of my pictures, 2-4 MB each now, down to about 100-200KB each, while leaving the file names pretty much intact? Something that should be ok for most picture sharing purposes. A batch process would be desired. I tried photoshop in MAC for this, seemed way too difficult. The pics could be converted via either Mac or Windows software, preferably freeware or adequately enabled demo /shareware.