FTP itself does not have a limit per-se but there appears to be some limit in windows above 2GB mark.
have a read of these:
http://blog.monkeyless.com/2005/11/01/buggy-ftp-size-limits-in-windows-iis/http://www.webservertalk.com/archive121-2004-11-105549.htmlOne way around this is to not use the windows ftp client and/or server. Try filezilla, first as a client and if that does not help you may need to use a better server on your win2k box, there is a filezilla server available as well