"What is your mother's maiden name?"
That makes sens to me, but in that case
in romanian it should be:
"Care este numele de fata al mamei tale/dumneavoastra."


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Note added at 2002-04-23 15:45:42 (GMT)
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I guess your original sentence in Romanian was:
\"Care este numele ma-tii inainte de insuratoare?\"
where
\"ma-tii\" is a very rude form of \"your mother\" (something like \"yo\'mum\")
and
\"insuratoare\" = marriage (but applicable in Romanian only for men: men get married=barbatii se insoara, whereas women get married= femeile se marita)
so, literally, your sentence should be translated:
\"What\'s you\' mum\'s name before [having got] married?\"

Good luck!