How to install VE in Eclipse

check online documentation, don't look into google

VE releases can now be downloaded through Update Manager.
VE 1.1.0.1 with Eclipse 3.1.2 has become a little complicated because of some Eclipse update site restructuring that has taken place. Because of this here are the instructions for VE 1.1.0.1:
Install Eclipse SDK 3.1.2 SDK. Download the appropriate zip file for your system.
Unzip into a clean directory
Run the eclipse.exe out of the eclipse directory and select/create a workspace
Do Help->Software Updates->Find and Install...
Select the Search for New features to install... and hit the Next button
Click on New Remote Site... button, and add this site (name it VE): http://update.eclipse.org/tools/ve/updates/1.0
Click on New Remote Site... button, and add this site (name it EMF): http://update.eclipse.org/tools/emf/updates
Click on New Remote Site... button, and add this site (name it Old Eclipse): http://update.eclipse.org/updates/3.0
Select VE, EMF, and Old Eclipse, and Hit Finish
Select the mirrors to use as they are asked for
Expand the tree VE->VE->Visual Editor SDK 1.1.0.1, and hit the checkbox on it
Expand EMF tree, EMF->EMF SDK 2.1.2->EMF SDK 2.1.2 and hit the checkbox on it
Expand Old Eclipse->GEF 3.1.1->Graphical Editing Framework 3.1.1 and hit the checkbox on it
Hit Next, accept the licences, hit Next, hit Finish
This will then allow a clean complete installation of VE
With Eclipse 3.2 there is Callisto, which makes it all simpler and one-stop shopping. See Callisto.
Or you can download the version of VE that matches your installation of Eclipse. (The SDK download contains documentation and source, while the runtime download does not.) You will also need to download the matching version of GEF and EMF. The download page will give this information for you. Exit Eclipse and unzip into the directory that eclipse is installed into. For example, if you have installed into "D:\XYZ\eclipse", you would unzip into "D:\XYZ". Restart Eclipse using the -clean option (only do this once) to clear the cache and verify that everything is installed. To do so, go to Help->About Eclipse Platform->Feature Details. Check the following entries:
Provider
Feature id
Eclipse.org
org.eclipse.jem
Eclipse.org
org.eclipse.jem.source (SDK only)
Eclipse.org
org.eclipse.ve
Eclipse.org
org.eclipse.ve.source (SDK only)
Eclipse.org
org.eclipse.ve.sdk (SDK only)