May I ask why you're using Pluto?
JetSpeed2 is a free download, and is a little bit more feature filled. I also run it on a computer with 256 megs of RAM, so it's not that bad a resouce hog.
It may not help you with pluto, but I've got a free tutorial on installing JetSpeed2:
How to Install JetSpeed2 Portal Server with the embedded Derby Database And from there, I have tutorials on installing JSR168 portlets in JetSpeed:
Deploying JSR168 Portlet Applications to JetSpeed2 Portal Server The download and installation takes about half an hour at the most. It might be a one step back, two steps forward type of thing.
By the way, I looked at your code from the previous post, and it looked good. Mabye there was something missing in the portlet.xml file? Maybe a tag of some sort?
In that other post where you put your code, shoot your portlet.xml file there as well.
We'll get this working one way or another.
King regards,
-Cameron McKenzie