For this First You need to install ndiswrapper, no need for net coz the packages are included in the CD / DVD of Ubuntu just go to System>>Administration>>software sources then uncheck all downloadable from internet, Third party and Update repo’s only select Installable from CD-ROM/DVD. Now open a Add/Remove from Applications>>Add/Remove.. there select all avaliable appliactions in show, now seach for ndis you will see Windows Wireless Drivers select it and click Apply changes it will ask you for the CD insert the CD and it will get installed, now you just have to install the drivers of your card for this open System>>Administration>>Windows Wireless Drivers and install the windows wireless drivers ( bcmwl5.inf for hp6515b bcm4312) now follow these steps, type
sudo -i now you must be as root then type
nano /etc/rc.local the file should read
rmmod ndiswrapper
rmmod ssb
modprobe ndiswrapper
exit 0

all done now just reboot and enjoy your Linux……..

ok so lets come to the point how exactly did i solved these problems for installing ATI driver i have already explained it earlier here and here , so now moving to ndiswrapper
you need to download the source code (the .tar.gz file) from http://ndiswrapper.sourceforge.net well from any other computer if you have net access only by WiFi, after u have the tar.gz file copy it to any folder like your home folder ( /home/<username>/ ) now simply right click on it and select extract here, now you have a directory with all the files of source code but to compile the source you will need to install some more software from the DVD for this go to Add/Remove Software in the Applications menu, enter your root password when it will open it will give you error saying something like Repository could not be updated so go to repositories in that and let the tick be there only in front of Install Media remove that tick from every other option, here select Development then tick Development Tools (remove them after compiling if you wont use them), after that go to Search tab and select All packages, there search for ‘Kernel headers’ you will find a package with name of Kernel-headers – 2.6.23.1-42 select that, click apply it will ask you for the DVD insert it and packages will be installed, now you can happily compile your ndiswrapper source

For compiling open up a Terminal from Applications >> System Tools >> Terminal type ‘ su ‘ , enter your password now type
cd /home/<user name>/<name of ndiswrapper directory>/
now when in the ndiswraper directory type
make uninstall
to remove any previous non working installs of ndiswrapper, after that type
make
here you if you see a error then you probably dont have the correct/complete source or are missing a required package, if it proceeds without a error which it will then you just need to install ndiswrapper type
make install
your work is now over you just need to install the windows driver by the method which i have described here all done now let us proceed to the xserver problem

For this just login as root ( which i wont prefer but is best for this time ) and type ‘ startx ‘ at the prompt after logging in then go to /etc/ in the file browser there right click on ‘ inittab ‘ file and select open with “Text Editor” in the file there will be some thing written as
id:3:initdefault:
change that to
id:5:initdefault:
and save the file, reboot and you will be greeted by a nice Fedora Infinity Screen enjoy!!!!