Variable Date/Today in win98 batch file

I have to write a batch file for run under win98 / Me that copy only the files from a directory created or modified TODAY into a network directory.
I think that xcopy will do the job, but the switch /D requires a prompt. I would like read the todaydate in system environment and pass the argument to the /D flag of xcopy (users has only to double click an icon on their desktop).
Any clues?
Thanks
Andy