Resize jfs partition

[dclemen <dclemen@cajamar.es>]

Hi, I have "/" directory on a partition with jfs file system. It has
140Gb size, but I remove another partition with 40Gb that was behind "/"
partition. So I want to resize my / to get these 40Gb.

I read some sites to resize partitions with:

# mount -o remount,resize /home

But I thing that I can't do it with / partition.

There are any way to get it?. If not, maybe I can get any live-cd distro
and then resize it.

It is safe? (I don't want to loose my data)

Thanks

PD: fdisk /dev/sda
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        5864    47102548+   7  HPFS/NTFS
/dev/sda2            5865        6085     1775182+  82  Linux swap / Solaris
/dev/sda3            6086       24321   146480670   83  Linux
/dev/sda4           29500       30401     7245315    5  Extended
/dev/sda5           29500       30401     7245283+   b  W95 FAT32

I want to get blocks from 24321 to 29500 (29499) into dev/sda3