i downloaded Miro from this site http://download.cnet.com/Miro-for-Li...-75185046.html
now tell how to install it on Backtrack4 plz step by step

Backtrack 4 is outdated and not supported anymore at all. I would recommend to use Backtrack 5R2 and just install Miro from the repositories.
If you are new to Linux and don't know how to install from repository then I would recommend not to use Backtrack at all, use a more beginner friendly distro. Backtrack is distro aimed at network and security experts, not beginners.

yes i am a begginer and i think without using i cant learn anything isnt it ? anyways i have one more question thats as u said BT4 is out of update and it doesn't support any more... it means everytime when new version will come out we need to update or download a fresh new version BT so we can work properly ? as i said i am new so can you please clear my one doubt about "repositories". it is means by this "apt-get install miro" by typing on terminal ?

one more question there is any way to install software after downloading on BT just like windows xp or 7 ?
and also explain how can we install above software (miro) which is downloaded by the link on BT5
Thanks in advance

Yes because the repositories are dead. Backtrack is not a rolling release distro.

Yes. In a current version of Backtrack linux like TobiSGD suggested. The repositories will have the current miro and needed current libraries and dependencies needed to install miro and have it working.

http://www.backtrack-linux.org/blog/

Yes, that is right. But Backtrack is a niche distro for one single purpose, not a desktop system. That makes learning on it more difficult, it would be better to use a distro that is meant to be used as a desktop system. Backtrack is for experts in network and security tasks, not for Linux beginners. It is like trying to learn driving with something like this.

Backtrack is one of the distros that don't maintain older releases. That means that older versions don't get bugfixes, security updates or new features. That is one of the reasons why it is not a good idea to run it as normal desktop system.

Unlike in Windows, software in Linux is normally installed through repositories that are maintained by the distribution developers. This way is more secure, easier and you will get updates automatically. Since Backtrack is based on Ubuntu they mostly rely on the Ubuntu repositories. To install software from the repositories you use one of the many package managers, on the command line the preferred tool for Ubuntu is apt-get, so yes, you use that tool on the command line.

There are ways, but they are not the recommended way. Files with the .tar.gz (or .tgz, tar.bz2, ...) ending mostly contain source code, not compiled binaries, like you are used to from Windows. You can install those software, but doing that improperly (means without building a proper software package) can break your dependency chain, so it is not recommended for newbies.

I would recommend that you go for a more beginner-friendly distribution, like Mint, Mepis, PCLinuxOS or ZorinOS. I also recommend to forget about trying to do things the Windows way and to read Linux is NOT Windows.

Backtrack is likely to get you into trouble. The tools on it could be illegal or used for illegal uses.

Consider a more mainstream distro.

Thank All of you for replying and guiding me. can you people suggest me if i am targeting to know and learn Backtrack then what should i do ? and also suggest me an OS which is just like Backtrack (i heard about matrix crypton is it good?)and OS should have all hacking tools becoz my main purpose of learning BT was using the Tools and trying to do something illegal so there should all tools in the OS which one is suggesting by You. do not tell lots of OS name becoz i will be confuse just tell me one OS name.thanks once again

At first, no one here will help you to do something illegal. At second, there seems to be a serious misconception on your side. You can't "learn Backtrack". Backtrack is nothing more than a (well designed) base for tools that are used by network and security experts. If you want to make a use of those tools you first have to gain knowledge in network and security topics. And those topics are far to complex to be taught in a few forum posts.

Or in a simple way: There are no point and click tools that will make you a 133t haXor!

Every Operating System "can" be used , including windows 7 or vista or EVERY Linux distro
for good or BAD

they ALL can have the needed tools installed
BT is just a " special " distro that was designed BY SECURITY EXPERTS for use BY security experts.To preform there needed security jobs .

if you want to be a "white hat" ( NO one here will help you be a "black hat" )
step ONE
1)
6 years at Univ. to earn a masters in networking and a minor in computer forensics

2) well after 6 years at Univ. that is up to you


also if you read the Backtrack web site
BT5 r 2 is current
-- training --
http://www.backtrack-linux.org/infor...rity-training/


pay "Offensive Security "
http://www.offensive-security.com/in...y-training.php

can i use "matriux krypton" as a desktop or it is like Backtrack ?

i also want to know about these thing plz define these simply in your own words
KDE (only)
Gnome (only)
Xfce (only)
Openbox

Matriux is also a distro meant for security experts, like Backtrack, although the developers claim that you can use it for desktop systems.
Unlike Windows, Linux has the GUI separated from the core system. There are many different GUIs for Linux that you can use. KDE, Gnome and XFCE are complete desktop environments that you can install and use. That means they come with every day tasks applications. Openbox is a (powerful) window manager, it delivers nothing that the ability to handle your windows in a nice way.