If you have a later version of Sun, you can find many of these answers in the man page for passwd.
Also, the min/max parms you are looking for are arbitrary. It really depends on how long is practical. Usually the min can be as low as 0-7 range for keepign a passwd and for max. I would keep it between 30-60 day range.
I also believe this has been answered before. Try a search of the site for your topic.