Remember our tutorial on how
to install applications on your iPhone, no hacking skills required? It just
got even easier: now you don't need to get into the Terminal to do it. It's as
simple as starting up the new GUI-based installer from Nullriver. It just works
and it won't void your warranty in any way. Still need help? Keep reading for
the updated tutorial, now for Mac OS X and Windows.
Preparation
• For Mac OS X, download AppTappInstaller from
Nullriver.
• For Windows, download iBricker from here and the
Installer application package from here.
• Connect your
iPhone to your computer using the provided cable.
• Deactivate the iPhone
automatic synchronization in iTunes before proceeding and close iTunes.
Steps for Mac OS X
• Run AppTappInstaller and select your firmware
from the pop-up.

• The script will automatically download the necessary restore file from the
Apple servers.
• It will prompt you to hold the home button (with the
square) and the power button (on the top) at the same time (hold first
the home, then hold the power.)
• When the message "Connect to iTunes" appear
in your iPhone, release the buttons and let the thing do its magic.
Steps for Windows
• Run iBrickr. It will guide you through the
steps to do the Jailbreak, the process that will allow you to install
Nullriver's Installer apps (as well as many other cool things.)
• Once you
have performed the Jailbreak, install the Installer.pxl package from the
Applications view.
Installing applications
• The iPhone will restart and you will find
a new icon in your home screen:

• You can disconnect the iPhone cable now, as the installation of apps happen
over the air —using Wi-Fi or EDGE. If you want, enable automatic sync in iTunes
before disconnecting.
• Open the Installer application by tapping in the icon
on your iPhone home screen.
• Before installing any new applications, update
the Installer itself by clicking on the "Update" tab. If it doesn't show
anything, don't worry. You are up to date.
When you start Installer you will see only a handfull of applications. They are Nullriver's apps, which include a BSD Subsystem and MobileTerminal. To access all third-party software available, do the following:
• Click on the Install tab now. It will connect to the Internet and register
the available packages.
• Click on Community Resources package inside
the Install tab.
• You will see the detail. Click on the Install
button.
• After installing, you will see all the third-party applications
currently available for iPhone (some of them are missing, however. Hopefully
they will add them soon.)
• Before start installing new applications, install
the Launcher application.
Why? The iPhone springboard (the home screen) won't scroll, so if you install many applications, you won't be able to access some of them. The Launcher gives you a way to access all non-Apple apps from a scrollable list
• After installing Launcher, go to the home screen. You will see that the
interface will initialize itself and the new application icon will appear.
•
Go back to the Installer app, select any new app you want, hit the Install
button and enjoy.
What's next? More iPhone applications coming soon, with or without Apple's blessing.
I found this at
http://gizmodo.com/gadgets/update/how-to-install-apps-on-your-iphone-for-total-dummies-mac-os-x-and-windows-edition-292561.php




iPhoneSIMFree, the company that released 

Wouldn’t it be nice if we could just