Well I have evolution and I was trying to get it to work with SpamAssassin to filter out spam. (BTW I have Slackware 10 installed fresh from the isos). Anyway I followed the directions in the install file, and installed it through CPAN:

cpan> o conf prerequisites_policy ask
prerequisites_policy ask

cpan> install Mail::SpamAssassin
CPAN: Storable loaded ok
LWP not available
CPAN: Net::FTP loaded ok
Fetching with Net::FTP:
ftp://ftp.perl.org/pub/CPAN/authors/01mailrc.txt.gz
Going to read /root/.cpan/sources/authors/01mailrc.txt.gz
LWP not available
Fetching with Net::FTP:
ftp://ftp.perl.org/pub/CPAN/modules/...details.txt.gz
Going to read /root/.cpan/sources/modules/02packages.details.txt.gz
Database was generated on Mon, 28 Jun 2004 17:36:05 GMT
HTTP:ate not available
LWP not available
Fetching with Net::FTP:
ftp://ftp.perl.org/pub/CPAN/modules/03modlist.data.gz
Going to read /root/.cpan/sources/modules/03modlist.data.gz
Going to write /root/.cpan/Metadata
Mail::SpamAssassin is up to date.

Now when I try to run "spamassassin -h" I get this message:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = (unset),
LC_ALL = (unset),
LC_COLLATE = "C",
LANG = "en_us"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
Can't locate HTML/Parser.pm in @INC (@INC contains: lib /usr/lib/perl5/site_perl/5.8.4/i486-linux /usr/lib/perl5/site_perl/5.8.4 /usr/lib/perl5/5.8.4/i486-linux /usr/lib/perl5/5.8.4 /usr/lib/perl5/site_perl) at /usr/lib/perl5/site_perl/5.8.4/Mail/SpamAssassin/HTML.pm line 7.
BEGIN failed--compilation aborted at /usr/lib/perl5/site_perl/5.8.4/Mail/SpamAssassin/HTML.pm line 7.
Compilation failed in require at /usr/lib/perl5/site_perl/5.8.4/Mail/SpamAssassin/PerMsgStatus.pm line 42.
BEGIN failed--compilation aborted at /usr/lib/perl5/site_perl/5.8.4/Mail/SpamAssassin/PerMsgStatus.pm line 42.
Compilation failed in require at /usr/lib/perl5/site_perl/5.8.4/Mail/SpamAssassin.pm line 62.
BEGIN failed--compilation aborted at /usr/lib/perl5/site_perl/5.8.4/Mail/SpamAssassin.pm line 62.
Compilation failed in require at /usr/bin/spamassassin line 66.

I have Perl 5.8.4 installed and I tried using the "export LANG=us_en" trick but that didn't work. Any help would be greatly appreciated.

Try typing:
LANG=C

Then load CPAN with:
perl -eshell -MCPAN

At the "cpan>" prompt run:
install HTML::Parser

Then try spamassin again.

Yup that did it thank you. BTW I didn't even have to do the LANG=C. I just left it at the boot default.