Testing if a correlation is zero
Howell DC (2002) details the method to test if a correlation zero using Fisher's transformation. This [attachment:corr.xls spreadsheet] performs this calculation returning a z value.
A confidence interval for a correlation may be computed using the on-line calculator [http://faculty.vassar.edu/lowry/rho.html given here.]
Reference:
Howell DC (2002) Statistical methods for psychology. Fifth Edition. Duxbury press:Pacific Grove, CA.