I did it!
Found instructions here
http://archlinuxarm.org/forum/viewtopic.php?f=29&t=1692 to get blparam from nand.
ran blparam to get the current paramaters
$this->bbcode_second_pass_code('', 'bootdelay=2
baudrate=115200
autoload=n
netmask=255.255.0.0
bootfile="uImage"
kernflmode=s
load_nand=nboot 60500000 0 200000
load_nand2=nboot 60500000 0 800000
boot=bootm 60500000
boot_nand=run load_nand boot || run load_nand2 boot
stdin=serial
stdout=serial
stderr=serial
ethaddr=00:25:31:01:D7:03
cesvcid=LGTASR3K4YFY9DLDYSV7PP6G66
ceboardver=PPRO1
serverip=192.168.33.2
ipaddr=192.168.33.195
bootargs_stock=root=ubi0:rootfs ubi.mtd=2,512 rootfstype=ubifs console=ttyS0,115200 elevator=cfq mac_adr=0x00,0x30,0xe0,0x00,0x00,0x01 mem=128M poweroutage=yes
load_custom_nand=nboot 60500000 0 500000
load_custom_nand2=nboot 60500000 0 B00000
boot_custom=run load_custom_nand boot || run load_custom_nand2 boot
bootargs=root=/dev/sda1 ubi.mtd=2,512 rootfstype=ext2 console=ttyS0,115200 elevator=cfq mac_adr=0x00,0x30,0xe0,0x00,0x00,0x01 mem=128M poweroutage=yes rootdelay=15
bootcmd=run boot_custom
')
changed ext2 to ext3 like this
$this->bbcode_second_pass_code('', '/blparam "bootargs=root=/dev/sda1 ubi.mtd=2,512 rootfstype=ext3 console=ttyS0,115200 elevator=cfq mac_adr=0x00,0x30,0xe0,0x00,0x00,0x01 mem=128M poweroutage=yes rootdelay=15"
MTD: /dev/mtd0
type: 4
flags: 0x400
size: 134217728
erase size: 131072
write size: 2048
oob size: 64
-- Removing parameter 'bootargs' from 'root=/dev/sda1 ubi.mtd=2,512 rootfstype=ext2 console=ttyS0,115200 elevator=cfq mac_adr=0x00,0x30,0xe0,0x00,0x00,0x01 mem=128M poweroutage=yes rootdelay=15' because 'bootargs=root=/dev/sda1 ubi.mtd=2,512 rootfstype=ext3 console=ttyS0,115200 elevator=cfq mac_adr=0x00,0x30,0xe0,0x00,0x00,0x01 mem=128M poweroutage=yes rootdelay=15'
-- Adding parameter 'bootargs=root=/dev/sda1 ubi.mtd=2,512 rootfstype=ext3 console=ttyS0,115200 elevator=cfq mac_adr=0x00,0x30,0xe0,0x00,0x00,0x01 mem=128M poweroutage=yes rootdelay=15'
-- Writing parameter 'bootdelay=2'
-- Writing parameter 'baudrate=115200'
-- Writing parameter 'autoload=n'
-- Writing parameter 'netmask=255.255.0.0'
-- Writing parameter 'bootfile="uImage"'
-- Writing parameter 'kernflmode=s'
-- Writing parameter 'load_nand=nboot 60500000 0 200000'
-- Writing parameter 'load_nand2=nboot 60500000 0 800000'
-- Writing parameter 'boot=bootm 60500000'
-- Writing parameter 'boot_nand=run load_nand boot || run load_nand2 boot'
-- Writing parameter 'stdin=serial'
-- Writing parameter 'stdout=serial'
-- Writing parameter 'stderr=serial'
-- Writing parameter 'ethaddr=00:25:31:01:D7:03'
-- Writing parameter 'cesvcid=LGTASR3K4YFY9DLDYSV7PP6G66'
-- Writing parameter 'ceboardver=PPRO1'
-- Writing parameter 'serverip=192.168.33.2'
-- Writing parameter 'ipaddr=192.168.33.195'
-- Writing parameter 'bootargs_stock=root=ubi0:rootfs ubi.mtd=2,512 rootfstype=ubifs console=ttyS0,115200 elevator=cfq mac_adr=0x00,0x30,0xe0,0x00,0x00,0x01 mem=128M poweroutage=yes'
-- Writing parameter 'load_custom_nand=nboot 60500000 0 500000'
-- Writing parameter 'load_custom_nand2=nboot 60500000 0 B00000'
-- Writing parameter 'boot_custom=run load_custom_nand boot || run load_custom_nand2 boot'
-- Writing parameter 'bootcmd=run boot_custom'
-- Writing parameter 'bootargs=root=/dev/sda1 ubi.mtd=2,512 rootfstype=ext3 console=ttyS0,115200 elevator=cfq mac_adr=0x00,0x30,0xe0,0x00,0x00,0x01 mem=128M poweroutage=yes rootdelay=15'
Erasing 128 kb @ 0xa0000
Writing 2048 kb @ 0xbf800
***
*** BOOT LOADER PARAMETERS CHANGED -- REBOOT NECESSARY TO TAKE EFFECT!
***
')
Reran blparam to check that nothing else changed... once I confirmed that I rebooted. If something else changed, I would have been PMing Warheads... but all went well.
Thanks again
Tom