CSS in Zencart

Easy job for those that know CSS and Zencart. To illustrate my problem .... go to www.q-lobby.co.za. Click on Art in the Categories Box on the left (sub categories will open) I need the following : 1. The spacing between the catgories in the sidebox must be changed (they are to close on each other) 2.? The spacing between the catgories in the? mainpage must be changed (they are to? far from? each other. The space between the top 3 and the bottom 3) 3. There must be more space between the categories and the heading (new products) on the main page 4. The colour of the sub categegories in the sidebox must be different then the main categories 5. The width of the left sidebox is 186. I need this to be 250. I can change this in Zencart and all is fine on Internet Explorere, but in Firefox all looks distorted 6. When hovering on categories in the sidebox ... the categories must become bold and underlined I will need info after changed for future reference Thanks Ronnie