remove partaion

[yogesh at banasdairy.coop]

Filesystem            Size  Used Avail Use% Mounted on
/dev/hda2             7.7G  5.0G  2.4G  68% /
/dev/hda5              15G  331M   14G   3% /backup
/dev/hda1             388M   13M  355M   4% /boot
/dev/hda6              14G   11G  2.3G  83% /data
none                  121M     0  121M   0% /dev/shm


hi to all
 i have a partation type as discueed above
i want to delete/remove

/dev/hda5              15G  331M   14G   3% /backup
 this partation and want to install windows 2000 on that partation
so can u give me help how can i remove the partation so it wiill not effct
the linux and it run as it is



tahnks