Hi,
There are various 'zip' software programs that will let you split the file up. The most popular one is WinZip. Just search Winzip in
www.Google.com and you will find a link to download it free.
Most of them have the option of 'spanning' a large file across disks.
The only problem is that a 600mb video file will probably not compress down that far. Also, a floppy disk holds 1.44 mb, even with compression it is going to take hundreds of disks to transfer the file. This won't be very practical!
I think you would be better off investing in a writable cd drive (they aren't very expensive), that way you could copy the file on to a cd and transfer it that way.
hope this helps.