can not enable 3Ware 9550SX in Proxmox 2

Hello together,

I am new to Proxmox and also to this list.

I have installed proxmox2 on a new disk (to be able to go back to a old but working SuSE installation).
Linux pm1 2.6.32-17-pve #1 SMP Wed Nov 28 07:15:55 CET 2012 x86_64 GNU/Linux

There are 2 raid controlers in the box:
03:06.0 RAID bus controller: 3ware Inc 9550SX SATA-II RAID PCI-X
07:00.0 RAID bus controller: Areca Technology Corp. ARC-1280/1280ML 24-Port PCI-Express to SATA II RAID Controller

The Areca is working fine. Modules are loaded and fdisk -l shows the available disks/luns.
3Ware was not recognized - modules not loaded on boot. But I can not enable the 3Ware controler by just adding the available modules
lsmod | grep 3w
3w_9xxx 35732 0
3w_xxxx 27181 0

Am I doing anything stupidly wrong ?

Any help is appreciated.

KhP