a google search about what you will have to do with the boot manager. I did that with Vista and Windows XP but they were on the same partitian. There should be lots of information on the web.
I got a question about doing an upgrade from Windows XP to Windows 7. I got a 1 Terabytes HDD, it is partitioned in 4x250 GB more or less, if i install Windows 7 on one partition, is it possible if i did a backup of my Windows XP on one of the other partition to keep that back up of my files without losing them ? because i use the other partition for backups and downloads to save, thank you for anyone who can help me before i get Windows 7.