modifying removable drive

I have a 160 GB hard drive (a normal computer hard drive) which i've converted into a removable sort of a hard drive, adding the casing.

It's basically divided into 4 partitions, 2 Fat32 and 2 NTFS. Since i use Linux most of the time, i'd like to convert all the partitions into Ext3 partitions. Anyone know how i can do this?

Even though I am not using Linux right now, I think the following links might help you to accomplish what you want:

Converting FAT32 to EXT3 in Ubuntu / any Linux distribution
*ubuntuforums.org/archive/index.php/t-241169.html

I have read on various forums that you cannot convert from NTFS to EXT3 directly, because of the complex nature of NTFS. But there are some options.

*www.aeonity.com/frost/converting-from-windows-linux-hard-drives-ntfs-ext3

*www.linux-noob.com/forums/index.php?showtopic=636

Gnome Partition Editor for Linux
*gparted.sourceforge.net/

If someone uses Windows, You can try Norton PartitionMagic 8.0 which says you can do this:
Supports and converts partitions among FAT, FAT32, NTFS, Ext2, and Ext3 file systems

I am not sure if the above work or not.

But make sure you have made a Backup of the HDD before starting to convert.

Lemme know if any of them helped you.