I assume that you mean form fields when you say "text cells". In that case, you can do this with a custom format script. Bring up the properties for your field, go to the "Format" tab and select a custom format script. Use the following code as your script:
var n = event.value;
var parts=n.toString().split(".");
n = parts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",") + (parts[1] ? "." + parts[1] : "");
n = n.replace(/\./, " ");
event.value = n;
Karl Heinz Kremer
PDF Acrobatics Without a Net
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