Max_packet_allowed setting for Windows 7
The maximum size for a MySQL Packet is 1G according to the MySQL Documentation. See my post Changed max_allowed_packet and still receiving &#39;Packet Too Large&#39; error  in case you are dealing with big BLOBs.

If you are importing a large database from Windows. see my past posts


Jul 24, 2013 : Moving MySql from windows server to linux (StackOverflow)
Apr 17, 2011 : How can I optimize a mysqldump of a large database?