do you want me to write the whole error window? ok

could not fetch modules/03modlist.data.gz
going to write C:\perl\cpan\metadata
warning : cannot install Spreadsheet::Read, don't know what it is
try the command
i/Spreadsheet::Read/
to find objects with matching quantifiers
[download]

I also tried I/Spreadsheet::Read/ but it showed 'i' is not recognized as an internal or external command operable program or batch file

"do you want me to write the whole error window? ok"

Ideally we want you to only post relevant information: How do I post a question effectively?.

could not fetch modules/03modlist.data.gz
[download]

If you can't access cpan.org (or a mirror) you won't be able to download and install modules. If you don't have internet access you are going to have do create a local cpan mirror using a system which does have internet access and a tool like minicpan. If you do have internet access but need to configure your network access properly see the documentation for each tool which has instructions for doing so. If you don't know what any of this means it's perhaps best to speak to your systems administrator.

Update:

"I also tried I/Spreadsheet::Read/ but it showed 'i' is not recognized as an internal or external command operable program or batch file"

You're supposed to try this within the cpan shell:

cpan[6]> i /ACME::POE/
Module  < Acme::POE::Acronym::Generator (BINGOS/Acme-POE-Acronym-Gener
+ator-1.20.tar.gz)
Module  < Acme::POE::Knee        (BINGOS/Acme-POE-Knee-1.12.tar.gz)
Module  < Acme::POE::Tree        (RCAPUTO/Acme-POE-Tree-1.022.tar.gz)
3 items found

cpan[7]>
[download]

could not fetch modules/03modlist.data.gz
[download]

Again, you have a network problem, and the interesting part for the diagnosis are above the quoted line. Consult with your network administrator on how you need to configure your machine and the CPAN tool for outside HTTP access.