What are you having trouble accomplishing?
Finding a calendar widget/control?
displaying calendar widget in response to button click?
updating text field based on calendar widget selection?

To find the answer all you have to do is activate perl-win32-gui-cpan-howto-SECRET

Win32::GUI ->
->http://search.cpan.org/dist/Win32-GUI/
->http://search.cpan.org/tools/Win32-GUI-1.06 ->
->http://search.cpan.org/grep?cpanid=ROBERTMAY&release=Win32-GUI-1.06&string=calendar&i=1&n=1&C=0 ->
->samples/MonthCal.pl
MonthCal
->samples/DateTime.pl
DateTime

Can anyone guide me how to achieve it..Thanks

I could, more than guiding in powerful secret, but I don't really want to :)

Why did you choose to use Win32::GUI?

Try The GUI Loft -- a Win32::GUI designer/builder for Windows User Interface creation in Perl

but ask yourself first Is Win32::GUI the best perl GUI toolkit on Windows?, Does Win32::GUI work with Unicode/UTF-8?

I like Wx :) Re: wxPerl: is BitmapFromImage implemented? (no;sleep;docs), my wxWidgets / wxPerl / wxGlade tutorial, http://www.wxperl.it/p/wxperl-primer.html , wxperl_usage / wxperl-usage / wxPerl::Usage / Class Method Browser , available methods, method invocation syntax, link to docs, Re^8: How to use wxHtmlEasyPrinting (On debugging, verify everything, talk to teddybear ... and links and links , Tutorials: Perl documentation documentation, Searching Perl Documentation