Just asking but why Feather?
I like Feather too except it's probably a dead distro...too bad really.
You should check out Tinycore
It's the new DSL and since Feather is similar all is good.
It's current and has alot of apps avail.
I just made a Portable-Feather-0.7.5 today..it's Feather installed to a portable-qemu img; I made it 600MB with a swap partition too.
The kit download (make your own vhd) lets you do your own. ( http://multidistro.com/downloads/por...7.5-Kit.tar.gz
That way you can experiment with Feather, etc and take risks without hurting your real system. I suggest at least a 500MB vhd.
It works on Linux and Windows.
Read this post for more info-
The download with the 600MB vhd will be avail. in an hour-the vhd compresses down to 129MB
and you just use the scripts to install or run.
I suggest also playing the portable on a mid-to-high ram PC.