This is not strictly NetSurf related but I wanted to make a note of it here in case it is useful for development/testing/debugging of NetSurf Amiga version.
Thee are some easy steps here on how to set up OS4.1 Classic on the new beta of WinUAE: http://classicamiga.blogspot.com.au/2014/08/amigaos41-classic-on-winuae-part-1.html It needs a (legal) image of the OS4.1 Classic CD and a (legal) 3.1 ROM image (I think the OS4.1 CD has one of these on it these days). I've not tried it myself as (a) my PC is currently broken and (b) I don't have the "classic" version of OS4.1. Chris