DeLL vostro 1400 with Intel 965 GMA

How to enable/install 3D?
so i can install beryl.

PS. I use openSuse 10.2

This is the place to start
Beryl - openSUSE

I should say that Beryl is now replaced by Compiz Fusion.
You better wait a few days and install opensuse 11 where 3D is enabled by a single click…

I have the same system, running openSUSE 10.3.

To get 3D acceleration, I had to enable the proper modules, which were not loaded.

$sudo modprobe agpgart
$sudo modprobe intel_agp
$sudo modprobe drm
$sudo modprobe i915

Then I created symlinks for all of the GL libraries from /usr/lib to /usr/X11R6/lib.

$sudo ln -s /usr/lib/libGL* /usr/X11R6/lib

Finally, I made sure that the glx and dri drivers were set to be loaded in /etc/X11/xorg.conf:

Section "Module"
  Load         "glx"
  Load         "dri"

Finally, I reloaded X, and did a glxinfo/glxgears:

$glxinfo| grep direct
direct rendering: Yes
7164 frames in 5.0 seconds = 1432.699 FPS
7688 frames in 5.0 seconds = 1536.983 FPS

Even for onboard, this video is a little laggy… but it was about 400FPS w/o DRI.

Good luck!