Flash Builder 4.6 plugin install for Eclipse

see : http://kb2.adobe.com/cps/921/cpsid_92180.html

Flash Builder 4.6 supports installation as a plugin to an existing Eclipse instance. To do so:

1. Complete the installation process as described above.
2. Navigate to the installed Flash Builder installation location and open the utilities folder.
3. Run the executable Adobe Flash Builder 4.6 Plug-in Utility.exe.
4. Select the language and click on OK.
5. Select the Flash Builder installation location if prompted.
6. Select the Eclipse folder into which you want Flash Builder 4.6 to be plugged into and click Next. (Note: Your copy of Eclipse must be version 3.6/3.6.1/3.6.2/3.7, 32-bit and must contain a folder named “dropins”)
7. Review the pre-Installation summary and click on Install
8. Following installation, it is recommended that you edit the eclipse.ini file for your Eclipse instance, so that it includes the following settings:

-vmargs -Xms256m -Xmx512m -XX:MaxPermSize=256m -XX:PermSize=64m