Spacing Questions

I'll start by saying I've read ALL the forum comments for this theme and haven't found the answer to my questions below, so apologize if I missed something.  junkfoodrehab.net 1.  How do I decrease the spacing between the graphics currently featured in my widgets? 2. How do I decrease the space below the menu bar and the content on the page?  I tried other css suggestions you gave others and they didn't work for me. 3. How do I remove the faint gray border around all the images I've posted in the site? 4. How do I decrease the line break spacing between the images I posted on http://junkfoodrehab.net/shop/ Thanks in advance for your help.  Your staff is so incredibly helpful and have made setting up my site  so much easier.  You get 5 stars from me!