Making R packages on a Mac

I want to use some of my R scripts and datasets as a basis for an R 
package. I have been advised to avoid trying to do this under Windows so 
I thought I would see what I can do on my iMac, which runs Leopard.

Can any members of this group recommend Mac-oriented tutorials or 
similar documents that give advice on package development in the OS-X 
environment?

With thanks  -  Murray Jorgensen

Dr Murray Jorgensen      http://www.stats.waikato.ac.nz/Staff/maj.html
Department of Statistics, University of Waikato, Hamilton, New Zealand
Email: maj at waikato.ac.nz                                Fax 7 838 4155
Phone  +64 7 838 4773 wk    Home +64 7 825 0441   Mobile 021 0200 8350