debian stable and unstable in same PC

[salahuddin pasha <salahuddin.debian@gmail.com>]

hello,

i wanna use debian stable and unstable in same pc.

my HDD
============================
/dev/hda1 ntfs (6GB) (crash master windows XP)
/dev/hda5 ntfs (6GB)
/dev/hda6 swap (256mb)
/dev/hda7 reiserfs (14GB) (debain testing)
============================

should i create /boot, /(debain stable), /(debian unstable) ?

i just need xfce or gnome in stable.

thanx