Hi there,
You can probably use some Javascript Datepickers that allows the users to pick from there, than letting them key in the dates which you might have to validate. DatePickers can reduce your load of validating it, since user doesn't have to key in the date and possiblity of making mistakes is almost ruled out.
Take a look at this. Good one indeed. Got to just copy/paste the code.;)
http://javascript.internet.com/calen...te-picker.html
Hope that helps.
Cheers!
_________________________
- Vijay G
Strive for Perfection