nvidia driver conflict with linux compat, 10.3

[Gary Aitken]

I am in the process of upgrading to 10.3 by reinstalling it on a new disk.
When I attempt to install the
  x11/nvidia-driver, 
I get the message 

pkg-static: nvidia-driver-346.96 conflicts with linux-c6-dri-10.4.3 (installs files into the same place).  Problematic file: /compat/linux/usr/lib/libGL.so.1
*** Error code 70

What's the right way out of this problem?
My Xorg.0.log file contains the entries:

[    66.717] (WW) Warning, couldn't open module fbdev
[    66.717] (II) UnloadModule: "fbdev"
[    66.717] (II) Unloading fbdev
[    66.717] (EE) Failed to load module "fbdev" (module does not exist, 0)

[    66.725] (II) NV: driver for NVIDIA chipsets: RIVA 128, RIVA TNT, RIVA TNT2,
        Unknown TNT2, Vanta, RIVA TNT2 Ultra, RIVA TNT2 Model 64,
... <a whole boatload of others> ...
     
[    66.792] (WW) NV: Ignoring unsupported device 0x10de104a (GF119 [GeForce GT 610]) at 05 at 00:00:0
     Note: the GF119 / GT 610 is not mentioned in the ignore list above

[    67.930] (II) AIGLX: Screen 0 is not DRI2 capable
[    67.930] (EE) AIGLX: reverting to software rendering

Finally, I used the defaults when building xorg-server, which is DEVD and
not HAL.  If one does not build with HAL, will this cause problems for apps
which require it?  What is the advantage of DEVD?

Thanks,

Gary