Installing a latex .sty file

I've never managed to successfully do this until now. Here's the deal:
1) download & unzip the package from CTAN
2) run latex on the .ins file so that it creates a .sty file
3) find out what your computer thinks your TDS tree should be:
kpsewhich -var-value TEXMFLOCAL
(mine says "/usr/local/share/texmf")
4) create the tree /usr/local/share/texmf/tex/latex/ if it isn't already there (where is the name of your sty file)
5) paste in your .sty file
6) run mktexlsr /usr/local/share/texmf/
7) profit.