[plt-scheme] Default value for choices%

Hi all,

I'm using 3 choices% (day, month, year) to get a date. How can I default 
each value of choices% to todays date? An option of choices% called 
default would be great. How can I do this?
I'm trying some things but it seems that the default is always the first 
of the list passed to choices option. Any ideas?

Best regards,
-- 
Paulo J. Matos : pocm(_at_)mega.ist.utl.pt
Instituto Superior Tecnico - Lisbon
Software & Computer Engineering - A.I.
  - > http://mega.ist.utl.pt/~pocm
  ---	
	Yes, God had a deadline...
		So, He wrote it all in Lisp!