help with XML::Xerces::LocalInputSource()

Hi,
I am trying to use LocalInputSource() to parse an xml document contained in a variable 'body' ($parser->parse (XML::Xerces::LocalInputSource($body));) .

I am not sure if I am calling it correctly (I couldn;t find any example on how to use it).

I get the following errom messages - 

Use of inherited AUTOLOAD for non-method XML::Xerces::LocalInputSource() is deprecated at ./parse.pl line 349.
Error in eval: Can't locate auto/XML/Xerces/LocalInputS.al in @INC (@INC contains: /n/lion/u/lion2/rawat/XML-Xerces-2.3.0-4/samples/../blib/arch /n/lion/u/lion2/rawat/XML-Xerces-2.3.0-4/samples/../blib/lib ./lib /home/rawat/XML-Xerces-2.3.0-4/perl5/site_perl/5.8.0/i386-linux-thread-multi /home/rawat/MIME-tools-5.411/perl5/site_perl/5.8.0/i386-linux-thread-multi /home/rawat/MIME-tools-5.411/perl5/site_perl/5.8.0 /usr/lib/perl5/5.8.0/i386-linux-thread-multi /usr/lib/perl5/5.8.0 /usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi /usr/lib/perl5/site_perl/5.8.0 /usr/lib/perl5/site_perl /usr/lib/perl5/vendor_perl/5.8.0/i386-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.0 /usr/lib/perl5/vendor_perl .) at ./parse.pl line 349
 at ./parse.pl line 352

Any help in this regard will be appreciated.
Thanks,
Anshuman