cannot enable visual effect

SIS don't have much 3D support inLinux which you NEED to get effects.

I'll have a look but I don't expect we'll find much. Can you give the output of:

sudo lshw -C display

Thanks

Maybe this helps you:

http://ubuntu-virginia.ubuntuforums.org/showthread.php?t=958967&page=3

~J

*-display UNCLAIMED
       description: VGA compatible controller
       product: 771/671 PCIE VGA Display Adapter
       vendor: Silicon Integrated Systems [SiS]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 10
       width: 32 bits
       clock: 66MHz
       capabilities: pm agp agp-3.0 cap_list
       configuration: latency=0
       resources: memory:c0000000-cfffffff(prefetchable) memory:d4000000-d401ffff ioport:9000(size=128)

As actionparnship stated above, your driver stated in the description field doesn't support 3d acceleration so you are unable to get the compiz effects, there are other alternatives however, but I recommend that a plain Ubuntu is actually pretty good as well :) oh and if you still want visual effects, try something called xcompmgr its light weight and it might just work on your system.

http://ubuntuforums.org/showthread.php?t=958967&page=38

May help. I havent tried this so work out a rollback path as you go.

how to use xcompmgr to use visual effect @Vikram Dhillon?
can you give me step by step to use visual effect by using xcompmgr!

thanx before.

recommend me how to enable visual effects

*-display UNCLAIMED
       description: VGA compatible controller
       product: 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 01
       width: 32 bits
       clock: 33MHz
       capabilities: pm bus_master cap_list
       configuration: latency=0
       resources: memory:f0000000-f7ffffff(prefetchable) memory:ffa80000-ffafffff

http://www.ubuntugeek.com/intel-graphics-performance-guide-for-ubuntu-904-jaunty-users.html

Will be fine in any release (Although I wouldn't recommend Maverick due to your clear newness with Linux).