I was trying to find out how to do this on the forum to no avail.. DiskUtility's interface will only allow you to create multiple partitions of the same filesystem.. I knew this was possible, and here it is..
Taken from: http://home.earthlink.net/~athene/no...wfs_msdos.html
Creating Multiple Partitioned File Systems for Multiple OSs
This option is useful in several regards. Mac OS X users might want to use a portion of the disk for backups and part for sharing data with Windows. A Windows XP users might want a partition as NTFS, and a FAT 32 partition for exchanging files with Linux. Rather than repeat all details, please read the above section carefully. Apple's diskutil will do this straight from the command line:
[kyoto:~] rds% diskutil partitionDisk disk2 2 MBRFormat HFS+ mac 46.7G MS-DOS dos 30G
[kyoto:~] rds% fdisk /dev/rdisk2
Disk: /dev/rdisk2 geometry: 10011/255/63 [160836480 sectors]
Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: AF 0 0 9 - 1023 75 43 [ 8 - 97937000] HFS+
2: 05 1023 75 44 - 1023 154 63 [ 97937008 - 62899472] Extended DOS
3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
Signature: 0xAA55
Starting Ending
#: id cyl hd sec - cyl hd sec [ start - size]
------------------------------------------------------------------------
1: 0B 1023 75 52 - 1023 154 63 [ 97937016 - 62899464] Win95 FAT-32
2: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
3: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
4: 00 0 0 0 - 0 0 0 [ 0 - 0] unused
[kyoto:~] rds% diskutil list
/dev/disk2
#: type name size identifier
0: FDisk_partition_scheme *76.7 GB disk2
1: Apple_HFS mac 46.7 GB disk2s1
2: DOS_FAT_32 DOS 30.0 GB disk2s5
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