check google - here's what I found including your post! lol
http://www.google.com/search?sourceid=navclient&ie=UTF-8&rlz=1T4GGLJ_enUS353US356&q=dye+roving+using+an+electric+steamer

thanks for responding, i saw the info on using an electric food steamer for dyeing roving in a blog more than a year ago there were pictures and instructions on the technique. i book marked the site with the info. but my computer crashed and i lost the info. i'm sure someone has the info.