Paula
Here are some things i found on a website that is helpful, the link is
http://www.athealth.com/consumer/disorders/parentalgrief.html:
When trying to comfort grieving parents
DO:Acknowledge the child's death by telling the parents of your sadness for them and by expressing love and support; try to provide comfort.
Visit and talk with the family about the child who died; ask to see pictures or mementoes the family may have.
Extend gestures of concern such as bringing flowers or writing a personal note expressing your feelings; let the parents know of your sadness for them.
Attend the child's funeral or memorial service.
Remember anniversaries and special days.
Donate to some specific memorial in honor of the child. Offer to go with the parent(s) to the cemetery in the days and weeks after the funeral, or find other special ways to extend personal and sensitive gestures of concern.
Make practical and specific suggestions, such as offering to stop by at a convenient time, bringing a meal, purchasing a comforting book, offering to take the other children for a special outing, or treating the mother or father to something special.
Respect the dynamics of each person's grief. The often-visible expressions of pain and confusion shown by grieving parents are normal. Grief is an ongoing and demanding process.
DO NOT:Avoid the parents or the grief. Refrain from talking about the child who died or referring to the child by name.
Impose your views or feelings on the parents or set limits for them about what is right or appropriate behavior.
Wait for the parents to ask for help or tell you what they need.
Tell them you know just how they feel.
Be afraid to let the parents cry or to cry with them.
There may be other helpful ideas on the site.. I'm not sure if this is too specific (being about grieving parents specifically)..
xo karen