Sil3114 controller?

[freebsd-amd64 at retrovertigo.com]

Greetings,

I have a dual Opteron system on a Tyan Tiger K8W (S2875).  

I have attempted to install via the 5.2-RELEASE ISO's.  Problem:  CD boots 
fine, but my SATA drives (two Seagate Barracuda 7200.7 120G) were not 
detected.  I don't see anything in the release notes specific to the 
controller or the drives.

The motherboard has the same Sil3114 SATA controller as the Tyan Thunder K8W 
(S2885).  I have seen other posts to this list that indicate success in 
installing FreeBSD on the Thunder K8W, so I'm wondering why I can't see the 
drives on my system.

The drives came with Windows XP pre-installed which seems to work ok for 
Windows.

Any suggestions?

Cheers,