Notes from past installation. May be incomplete
Performed onb eclipse helios 3.6 and Indigo 3.7
ActiveState perl.
Add paddwalker to perl
ppm install padwalker
Download site (I think this is the epic-ide site for eclipse)
Extract locally. Capture the site folder name
Go to eclipse Help | Install New Software | Add Site, Provide local Path
You might be able to have eclipse install it directly using the following...