I'm a godmother to my niece, and you have to promise to ensure that your godchild gets the proper religious upbringing if anything should happen to the parents. However I think in todays largely aethiest society its more of an honourary thing. If you have a different view on it, you just need to speak to the prospective godparents about whay you feel it means.

We had our wills done up properly when we got married, but they really need to be updated as DH has a heap of land in his name now, and if he carked it, it would have to be x-ferred to his folks name to keep the farm together. When we have the bub we will go down to Melbourne again and get them updated.