So you want to read and write to a Windows NTFS partition, no problem!

(K)Ubuntu has made this trivial.

First things first, install the software you will need. Open the terminal and type:

sudo apt-get install ntfs-config

Now you simply reboot if your drive doesn't magically just appear. NTFS drives should be automatically mounted, at least this was the case for me using SATA drives. If not the next part may mount them for you in the config tool. Simply go into the KDE menu and select System, NTFS Configuration tool.

Just enable Write for internal, external, or both depending on your configuration.

If you end up manually adding entries to fstab and you need to get the UUID of you drives this command will do it:

ls -l /dev/disk/by-uuid

This will list a few lines depending on how many drives you have, agua is your drives UUID:
lrwxrwxrwx 1 root root 10 2007-04-04 19:30 b1f55ac1-8c55-4244-880f-7237cb781fdb -> ../../hda1

Now if you're in Windows and want to read and write to ext2 and ext3 Linux file systems you will want to get the Ext2 installable file system for WIndows. Works flawless and mounts on Windows like any standard Windows drive.