The Ubuntu dial boot tutorial says:
a GRUB boot partition 100 Mb -- formatted to filesystem type ext3
a logical partition for the / (root) folder of each planned Linux (or Mac) OS (at least 10 Gb each, but 20-50 Gb is better) -- formatted as ext3 (or ext4 if you are planning to use a newer Linux OS)
But how to format ext3 type? Windows XP doesn't offer this type. Only FAT32.
