I just installed Ubuntu 10.04 on my Dell Isnpirion 1318, everything works except
the wireless connection, the laptop has a Dell wireless 1501 Draft 802.11n
wireless card, the Ubuntu driver is a proprietary driver for Broadcom STA
wireless driver. I see the wireless connection, but it doesn't connect to he
internet. I tried to install the ndiswrapper typing sudo apt-get install ndisgtk
at the terminal, still it doesn't connect
What am I doing wrong? is there any other solution? is there something missing?

yes- update!!!!!!
all you laptop operators seem to forget to update after installation......thus,
you don't get your machine-specific drivers...
You have to get to a wired internet connection and update after installing
ubuntu!!!!!!!

I have a dell with a broadcom wifi card. What I do is connect to the internet
via an ethernet connection and the driver is one of those you get from from the
internet. Sort of automatic. just start pushing bottons to install it. Then once
it has the driver it will connect. At least that is how I do it.

Have you checked online at the dell site yet? I don't remember the address, but
they have some pages will linux drivers and such...

YOU check the wireless security and wireless ethernet property

I did check the dell web site, that how i got the ndiswrapper, but it doesn't
explain any further

I assume you must be referring to a box in the ndis
interface or network manager that should be checked to resolve the OPs issue.
It would probably help him if you clarified your response a bit.

Where do i find the ndis interface?

Ndiswrapper is commandline only, but there is a GTK graphical interface that
you can install separately and it simplifies the process. To install it use
Synaptic, Software Centre and search for ndisgtk or use the commandline:
sudo apt-get install ndisgtk.

The wrapper interface is per the command line interface in a virtual terminal if
i remember right. But i dont quite remember.