C:\Documents and Settings\Administrator\Desktop\Math-Pari-2.010706>perl Makefile.PL 
Did not find GP/PARI build directory around. 
Do you want to me to fetch GP/PARI automatically?
  (If you do not, you will need to fetch it manually, and/or direct me to 
   the directory with GP/PARI source via the command-line option paridir=/dir)
Make sure you have a large scrollback buffer to see the messages.
Fetch? (y/n, press Enter) y  
Getting GP/PARI from ftp://megrez.math.u-bordeaux.fr/pub/pari/unix/  
Cannot create FTP object: Invalid argument at utils/Math/PariBuild.pm line 205, <STDIN> line 1.

Can't fetch file with Net::FTP, now trying with LWP::UserAgent... 
Can't fetch directory listing from ftp://megrez.math.u-bordeaux.fr/pub/pari/unix/: 500 (Internal Server Error) LWP::Protocol
FTP: Bad hostname 'megrez.math.u-bordeaux.fr'
Client-Date: Mon, 12 Jun 2006 06:52:10 GMT