Trying to Install BioPerl

Hey Adam.. (perl -V is in code snippet)

I've tried re-installing (install C/CJ/CJFIELDS/BioPerl-db-1.6.0.tar.gz), and upon installing have noticed the error:

Checking prerequisites...
 - ERROR: Data::Stag is not installed

so i have then quit out of the install, and entered "install Data::Stag" in>CPAN

but receive the following error messages:

External Module XML::LibXSLT, XSLT,
 is not installed on this computer.
  Data::Stag::XSLTHandler in Data::Stag needs it for XSLT Transformations

External Module XML::Parser::PerlSAX, SAX Handler,
 is not installed on this computer.
  Data::Stag::XMLParser in Data::Stag needs it for parsing XML

External Module GD, Graphical Drawing Toolkit,
 is not installed on this computer.
  stag-drawtree.pl in Data::Stag needs it for drawing trees

External Module Graph::Directed, Generic Graph data stucture and algorithms,
 is not installed on this computer.
  Data::Stag::GraphHandler in Data::Stag needs it for transforming stag trees to graphs

External Module Tk, Tk,
 is not installed on this computer.
  stag-view.pl in Data::Stag needs it for tree viewer

ok so for the C/CJ/CJFIELDS/BioPerl-db-1.6.0.tar.gz install, it's lacking Data::Stag who's install is lacking the list above. How would i go about installing the above list? is there an easier way or something i'm doing wrong?

Thanks,

Stephen

Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
  Platform:
    osname=darwin, osvers=9.0, archname=darwin-thread-multi-2level
    uname='darwin b02.apple.com 9.0 darwin kernel version 9.3.0: tue aug 12 17:18:07 pdt 2008; root:xnu-1228.5.90~13release_i386 i386 '
    config_args='-ds -e -Dprefix=/usr -Dccflags=-g  -pipe  -Dldflags= -Dman3ext=3pm -Duseithreads -Duseshrplib'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=define use5005threads=undef useithreads=define usemultiplicity=define
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=define use64bitall=define uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-arch ppc -arch i386 -g -pipe -fno-common -DPERL_DARWIN -no-cpp-precomp -fno-strict-aliasing -Wdeclaration-after-statement -I/usr/local/include',
    optimize='-O3',
    cppflags='-no-cpp-precomp -arch ppc -g -pipe -fno-common -DPERL_DARWIN -no-cpp-precomp -fno-strict-aliasing -Wdeclaration-after-statement -I/usr/local/include'
    ccversion='', gccversion='4.0.1 (Apple Inc. build 5465)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='cc -mmacosx-version-min=10.5.7', ldflags ='-arch ppc -arch i386 -L/usr/local/lib'
    libpth=/usr/local/lib /usr/lib
    libs=-ldbm -ldl -lm -lutil -lc
    perllibs=-ldl -lm -lutil -lc
    libc=/usr/lib/libc.dylib, so=dylib, useshrplib=true, libperl=libperl.dylib
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=bundle, d_dlsymun=undef, ccdlflags=' '
    cccdlflags=' ', lddlflags='-arch ppc -arch i386 -bundle -undefined dynamic_lookup -L/usr/local/lib'
 
 
Characteristics of this binary (from libperl): 
  Compile-time options: MULTIPLICITY PERL_IMPLICIT_CONTEXT
                        PERL_MALLOC_WRAP USE_ITHREADS USE_LARGE_FILES
                        USE_PERLIO USE_REENTRANT_API
  Locally applied patches:
	fix for regcomp CVE-2007-5116 security vulnerability
	fix for double-free CVE-2008-1927 security vulnerability
	/Library/Perl/Updates/<version> comes before system perl directories
	installprivlib and installarchlib points to the Updates directory
  Built under darwin
  Compiled at Mar 11 2009 16:09:08
  @INC:
    /Library/Perl/Updates/5.8.8/darwin-thread-multi-2level
    /Library/Perl/Updates/5.8.8
    /System/Library/Perl/5.8.8/darwin-thread-multi-2level
    /System/Library/Perl/5.8.8
    /Library/Perl/5.8.8/darwin-thread-multi-2level
    /Library/Perl/5.8.8
    /Library/Perl
    /Network/Library/Perl/5.8.8/darwin-thread-multi-2level
    /Network/Library/Perl/5.8.8
    /Network/Library/Perl
    /System/Library/Perl/Extras/5.8.8/darwin-thread-multi-2level
    /System/Library/Perl/Extras/5.8.8
    /Library/Perl/5.8.6
    /Library/Perl/5.8.1
    .

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You've accepted an answer, so I'm not sure if you have this solved, or not.  If not, read on...

Normally, to install a module, you use the install command from the CPAN module, as you tried.  This will download and install all prerequisites.  Maybe something is wrong with your CPAN configuration.  Your global configuration is stored in /etc/perl/CPAN, and your user specific config in ~/.cpan.  You can delete these, and you will be asked config questions next time you run CPAN.  Or you can run "o conf init" from the CPAN prompt.

After that, try installing BioPerl from cpan.  As root, run:
    cpan install BioPerl