I think you need the Tuhopuu… this is a build of blender wich has unwrapping tools wich they say … work very good… (I didn’t use them yet… but I know there’s a link somewhere in a thread because I donwloaded it from there…)…
Try a search for tuhopuu…the link is here somewhere…
Make sure you check that it is for your operating system before you download it, as Blender is multi-platform and they don’t compile one for each if it’s just a test build.
It’s a very nice script, from what I understand it unwraps based on the angles (so you will have to move some things around still) and speeds the process up a ton.
“From window” would be how I would unwrap most of that previously.