perl modules ?

[Irvine Russell <russirv@yahoo.co.uk>]

Hello all.

I wanted to use a small script that I found on the 
internet, and it says that I would need to have 
the following modules inorder for it to run:

Net::Telnet; 
Mail::Sendmail; 
Getopt::Std; 
Text::CSV_XS; 


1) How would I check whether I have these modules or
not, 

and

2) what package would I need to install to have 
these packages, if I did not.

As you might guess I am neither a perl nor debian
guru :)

BTW I am running potato.

TIA

T:Irvine

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