initrd question

[Steven Curtis <sjc@qx.net>]

I'm trying to upgrade to the vmlinuz-2.6.7-1-k7 kernel and my system has 
an Adaptec AIC7XXX EISA/VLB/PCI adapter.  The stock vmlinuz-2.6.7-1-k7 
kernel has aic7xxx support compiled as a module.  I added the aic7xxx 
module line to /etc/mkinitrd/modules and recreated the initrd image with 
'mkinitrd -o /boot/initrd.img-2.6.7-1-k7 2.6.7-1-k7'.  I'm using grub as 
my boot loader so I figured all is well.  Booting the new kernel does 
not load the module and thus upon trying to mount the root file system 
produces the following:

VFS:cannot open root device "sda2"or unknown-block (0,0)
Please append correct "root=" boot option
Kernel panic: VFS Unable to mount root fs on unknown-block(0,0)

presumably because the SCSI module has not been loaded yet.  I do not 
see any of the probing messages my old 2.4.19 kernel outputs which has 
aic7xxx support compiled in.  Any advice or suggestions on where to look 
for problems or what I have done wrong?

Thanks for any time.
Steve