anyone ordered the CD?

what does compizconfig-settings-manager does?

I am new to unbuntu, been using CentOS, so is "sudo aptitude install" the unbuntu version of "yum install"?
Sorry for the noobie question

Thanks for the reply

but I still don't understand this sudo thing, I never use anything such as sudo in CentOS.
The only su I use in CentOS is su root, but sudo -s can do the same thing in ubuntu.

so is sudo -s the same as su root? because I cant su root in ubuntu, it keeps telling me, my authentication fails.

I have a some problems here, I hope I would be able to get some assistance here.

1st problem, my wireless connection,
I have no problem connecting to my wireless connection if I disable its encryption, but when I uses WPA AES encryption, I failed to connect to it. The network manager applet just shows the connecting animation (where the bottom circle is green while the top circle is grey). I doesn't feel secure if I leave my wireless connection unencrypted.

I am using
3com usb 3rcusb10075 wireless device, )already installed its driver using ndiswrapper with the inf and sys file from the windows firmware that comes with the CD.) and Dlink DI-524 router.

2nd problem, also wireless
even if I disable encryption, my unbuntu is able to get connected, but with no IP address, as I had disable DHCP, the only way I can get my connection to work is to disable encryption and enable DHCP. I try to insert the infor into etc/network/interfaces but after I set my wireless usb which is given the name eth1, then the wireless option will dissappear from the network-manager applet when I restart.

3rd problem, the "beep" sound.
every time, when there are errors, my system unit will unleash a "beep" sound, but my sound card are running without a problem, as I can hear the login music, and mp3 and etc. Some example of when the "beep" sound occurs are :-
i) when I open terminal, then I press backspace on the keyboard when there is nothing to back.
ii) when I entered the wrong user/password during login, then the message to tell me the error will show up right? but when that happens and I re-enter my username and password, each key that I press will result the "beep" effect.
I just don't understand why it doesn't utilize my sound card to beep, but instead uses the motherboard to beep. Is this scenario normal? or there are some configuration that I need to play with.

Thanks for the help.

my spec pentium d 3.2ghz
nvidia 5600 128mb
ddr2 3gb
1 partition for windows and 1 partition for ubuntu.

Running fine with no problem at all, as for wireless dont use the network-manager that comes with gutsy, but install WICD instead, it can manage my wireless network better as should I say that the stock network-manager can't even connect to wpa encrypted AP, and doesn't support static IP.