ext3 + external journal -- Howto..

[Barrow H Kwan <bhkwan@xxxxxxxxxxxxxxxx>]

I am new to ext3 + external journal.  Is there any howto I can look
at? 


this is what I understand 
1. mke2fs -O journal_dev /dev/md5 
2. mke2fs -J device=/dev/md5 /dev/md0 
3. mount /dev/md0 / -t ext3   ( hmm.. what do I need to put on fstab??
) 

/dev/md5 is a two drive RAID 1 partition 
/dev/md0 is a 4 drive RAID 5 partition. 

questions: 
1. I am running RedHat 9.0.  what extra software I need to use?  do
I need to patch the kernel and recompile it? 
2. what do I need to do on fstab when I use ext3 + external journal.
3. do I need to run "tune2fs -i 0 -c 0 /dev/hdb1 ?
4. do I need to modify LILO bootloader? 


thanks!!