tried to install ati driver on BT4 R2 and here is the install log.

Code:
Errors during DKMS module removal
Errors during DKMS module removal

Creating symlink /var/lib/dkms/fglrx/8.821/source ->
                 /usr/src/fglrx-8.821

DKMS: add Completed.

Kernel preparation unnecessary for this kernel.  Skipping...

Building module:
cleaning build area....
cd /var/lib/dkms/fglrx/8.821/build; sh make.sh --nohints --uname_r=2.6.35.8 --norootcheck....(bad exit status: 1)
0
0
[Error] Kernel Module : Failed to build fglrx-8.821 with DKMS
[Error] Kernel Module : Removing fglrx-8.821 from DKMS

------------------------------
Deleting module version: 8.821
completely from the DKMS tree.
------------------------------
Done.
[Reboot] Kernel Module : update-initramfs