Installing Open Laszlo 3.3 and the Eclipse laszlo IDE plug in. Installed on Windows 2003. 
This worked for me on Kubuntu Linux also, with some obvious differences.

1. <a href="http://java.sun.com/downloads/" target="_blank">Download Sun Java JDK 1.5.0</a> and Install if you don't have it already.
   1a. LINUX ONLY: You may need to edit/add your Java paths in .bashrc file located in your home directory. Add the following line, pointing to your Java install location of course.

   export JAVA_HOME="usr/enter_the_path_to_Java_installation"

   (K)ubuntu issue:
	I had issues getting things working on Kubuntu. After extracting the jdk from the .bin
        I had to copy the directory and all it's contents to /usr/lib and /usr/lib/jvm and added the above JAVA_PATH to /etc/environment - reboot.

2. <a href="http://www.openlaszlo.org/" target="_blank">Download Open Laszlo 3.3.3</a> and install.

3. Test, if it didn't pop up, by pointing your web browser to: http://127.0.0.1:8080/lps-3.3.3/laszlo-explorer/index.jsp
   Note: Try port 80 instead of 8080 if it cannot find the page.

4. <a href="http://www.eclipse.org/downloads/download.php?file=/eclipse/downloads/drops/R-3.2-200606291905/eclipse-SDK-3.2-win32.zip" target="_blank">Download Eclipse IDE</a>

5. unzip Eclipse and copy the eclipse directory, including it's contents, to Program Files. Create a link to the eclipse.exe.

6. At this point you need to add some plug-ins to Eclipse to make everything work.

   Start Eclipse and add these first two update servers by going into 
   "Help", "Software Updates", "Find and Install", "Search for new features to install".
   These updates will ask for a server to download from, just stick with the default, top of list. When 
   asked to install select the button "Install All" for all of these.

   6a. Select "Add New Remote Site" add each individually. Start with these! you will need to restart Eclipse each time.

	NAME: emf 
	URL: http://download.eclipse.org/tools/emf/updates/site.xml
	
	NAME: gef
	URL: http://download.eclipse.org/tools/gef/updates/site.xml

   6b. Once those have been installed add jem and web tools and tick everything, not just the jem and web tools, in the list to install the remaining updates.

	NAME: jem
	URL: http://update.eclipse.org/tools/ve/updates/1.0

	Finally add web tools and install following the same procedure.

	NAME: Web Tools
	URL: http://download.eclipse.org/webtools/updates/

7. <a href="http://openlaszlo.org/download-old/ide/laszloIDE-0.2.0-jdk1.5.zip" target="_blank">Download laszloIDE-0.2.0-jdk1.5.zip</a>. Do not unzip.
   IMPORTANT. If you are behind a proxy and run into issues check preferences. You will notice new options and "Internet" is the key. It will ignore
   the settings in General for Proxy.

8. You want to follow the same procedure as step 6 with one exception, instead of adding a remote we want to select "New Archived Site". 
   Browse to the laszloIDE-0.2.0-jdk1.5.zip file when asked and check the box like you did with the remote site installs.

9. Last thing to do is to configure the plug-in. On the toolbar select "Windows" then "Preferences" and select Laszlo on your left. You need to select the LPS location.
   Browse to C:\Program Files\OpenLaszlo Server 3.3.3\Server\lps-3.3.3   
   HIt "Apply" and your ready to go.

Enjoy, Mohawke
       http://www.digitaldarknet.net

OpenLaszlo screenshots -
Kubuntu Dapper: http://www.digitaldarknet.net/laszlo-kubuntu.jpg
Windows 2003 Server: http://www.digitaldarknet.net/eclipse.jpg