Can't write to mounted disk.

[Mike]

Hello,
I have a dual boot, XP/Kubuntu 6.10 system. Kubuntu is installed on its 
own disk.  One partition on that disk is ntfs.  When I boot XP, I can 
see and write to this partition.  On Kubuntu, I can see it but can only 
read from it.  On the linux side, I used the KDE control panel, to 
define the owner, group, and mount point.  I did check the writable box. 
The following line appears in fstab.

/dev/sdb4 /home/madolf/Common ntfs uid=1000,gid=1000,auto,rw,owner 0 0

What else do I need?

Thanks,
Mike