Generally, at a trial setting, you will need to be prepared to discuss the case and, particularly, the legal and factual issues that remain disputed between the parties. Also, you should have an idea of how long trial will last.
Settlement conferences will vary from judge to judge, but again you should be prepared to discuss the legal and factual issues of your case. It is usually helpful to brief the legal and factual issues prior to the settlement conference so that you can work out the issues in writing. Once that is done you should be prepared to discuss these issues before a judge (or mediator).
This comment is made as general information and is in no way to be considered legal advice. Attorney's making such comments have no information beyond the information provided in the question presented. Additional information is necessary before an attorney can give specific advice. Please seek legal counsel.
Take a look at http://www.courtinfo.ca.gov/cms/rules/index.cfm?title=three&linkid=rule3_1380 for information concerning the Settlement Conference. For trial setting, at a minimum review the following: http://www.courts.ca.gov/1316.htm. Good luck and God Bless.