You can follow the steps below or use a predefined script to perform them automatically (you need to adjust paths in the script according to your environment).
- Create an empty folder on a file system with 500M of free space ($M2E_BASE from here on).
- Download Eclipse 3.3.2 SDK and extract it into $M2E_BASE

Windows users beware of this issue with unzipping - Download and extract into $M2E_BASE the following components from Eclipse WTP 2.0.2 download page.
- emf-sdo-xsd-SDK-2.3.2.zip
- GEF-SDK-3.3.2.zip
- wtp-sdk
- Download Mylyn 2.3.2 for Eclipse 3.3 and extract it into $M2E_BASE/eclipse
- Download AJDT 1.5.2 for Eclipse 3.3 and extract into $M2E_BASE/eclipse
- Download Zest and Draw2D and extract into $M2E_BASE/eclipse
- Download latest Subclipse 1.4.x build and copy it to $M2E_BASE/eclipse/plugins
cd $M2E_BASE eclipse/eclipse \ -application org.eclipse.update.core.standaloneUpdate \ -command mirror -from http://subclipse.tigris.org/update_1.4.x \ -to $M2E_BASE/subclipse-1.4 cp -R subclipse-1.4/plugins/*.jar eclipse/plugins