Also, if your SysAdmin won't let you install Perl modules in the usual place (/usr/lib* usually I think), but you can install elsewhere, this works for me (I tried to find the reference on Google, but couldn't):

• download, and unzip the file for MyModule from CPAN
• Extract to directory ~/MyDir
• cd to ~/MyDir/MyModule
• type perl Makefile.PL PREFIX="~/PerlModules/"
• type make test; make; make install as usual for a manual install
• Find the directory in ~/PerlModules in which MyModule.pm resides.
• Edit your ~/.cshrc (different for different shells) to contain the line 'setenv PERL5LIB
~/PerlModules/Directory_For_MyModule'

I know this doesn't help much if you're on Windows and the last step will be different for different UNIX shells, but I was stuck on this for a while, and if you Google, you'll likely find more (and better) information than I can give!

why_bird

edit: Found it! Here is a reference about how to install without root permissions, which also tells you an alternative to setting the environment variable PERL5LIB. And it talks about what to do on Windows.