Hi,
the Promise Ultra 133 TX2 is very cheap too! If you only want to use it to add more harddisks to your e-smith box, it works fine. Just plug it to the mainboard, connect and partition the harddisks with eg cfdisk...
The hardware RAID works too and it´s really fast!!!
But if you want to boot from the controller i don´t know if it´s possible. I tried booting RedHat 7.2 from RAID1 without success. However FreeBSD 4.4 can boot from it.
greetings
judy