I don't know what software you are trying to install but it looks like your Perl interpter can't find a module call XML::Parser. Either your perl in misconfigured or XML::Parser is not installed. If XML::Parser is not installed you can install like so ...
Code:
$ su
Password:
# perl -MCPAN -e shell
If you haven't run CPAN before you will be asked some questions. The defaults answers should work. When you get to the cpan> prompt type ...
Code:
cpan> install XML::Parser
There may be some requirements that XML::Parser will need. Hopefully you already have them installed if not the above procedure will let you know.