Have several questions about links sql....

1. How do I customize the spacing? as it came it is too far spaced I want single spacing.
2. Is it possible to have 3 columns instead of 2 on the category page?
3. (Biggest One) - I know its possible to use the dmoz database. Where are there detailed
instructions on how to do so? And does it merge with my existing database I have entered
by hand? - I dont want to lose the information I entered. And is it possible to only get 1 area
of their database? - or is it a take all kind of thing?
4. Where is the yahoo, snap, etc stuff, I see the template in "edit templates" but it comes up blank.
Where is it that I edit that stuff?

Would appreciate any and all aid in my quest for understanding this thing until a Links SQL for Dummies is released ;-)

Pelslvr