The childlike simplicity of the root without flash? This is possible with z4root, an application available on Android Market.

This is not the first to suggest this possibility since UniversalandRoot already meets the needs of many users. But this is the first that is present on the market, so ...

The root is to bypass the block normally imposed by manufacturers to gain super-user rights, which has the effect of allowing system changes at the system as: Force the installation of applications on the card -SD, increase the screen resolution, run capabilities faster, forcing a feature (screenshots, backup), change themes, ...

Finally, you'll understand a lot of things ... If you're curious, take a look by searching on the Android Market with the keyword: root, super-user, ... you come across a wide range of applications.
Turning to the purpose of the topic, the application z4root.
The required are:

3. Once restarted, go to the Applications menu and open z4root. In theory, you will request permission to Super-User will be displayed. Check "Yes". From there, the application and root function. You will notice that you can withdraw it at any time by pressing "A-root".

4. In the application menu, you have two applications outlined in red in the first screenshot you see below, and access to the super-user application that allows you to manage all incoming authorizations and outgoing.

 

Its small defect is not yet being fully compatible with all terminals, but it progresses over the updates.

- Samsung S Galaxy, Galaxy Tab; Galaxy i5700, i5800 Galaxy 3; Acclaim
- Motorola Backflip, Droid 2; Droid X Cliq / Dexter; Defy; Droid / Milestone (with z4root 1.2.1)
- Sony Ericsson Sony X10 & X10 Mini
- Cricket Huawei Ascend, Huawei 8120
- Acer Liquid
- LG Optimus T Ally; GT540
- Garmin Asus A50
- Nexus One
- HTC Hero; Wildfire

I allowed myself to add the Nexus One, who was not there. So if you find that others are compatible, leave a comment.

- Desire, Desire HD, Evo; G2/Desire Z (requires nand unlock); Incredible Droid; MyTouch 3G/Magic
- LG Optimus One; Archos 70; ...

Note that for much of HTC, it is possible to go through another application / software to perform the manipulation. There UniversalandRoot Unrevoked or method.