Children - what should I do?

[jackdaniels]

My wife and I have been married for about 4 years now, no kids. I'm 31, she is 29. She has always wanted kids but lately has been dropping hints about the possibility of a childless marriage. How do I encourage this attitude without appearing overzealous about the prospect? (I would avoid kids if it was possible to stay with her without them, but would have kids if it meant the marriage was over otherwise). She kinda knows where I stand, but I have always given the impresion that we'll have kids "when the time is right", tying it in to some fincancial goals we have (which we are meeting quite quickly - this is both a blessing and a curse as the kids question may pop up again).

Help me OOT!