Insulation, Radiant and Vapor Barriers - Blown in Insulation

I have an older home that has no insulation in the walls. I am looking to have my husband blow it in himself and am wondering how hard of a job this is. We blew it into our attic ourselves but i have read on web sites the walls are a little harder. I have not been able to find a place that carries the right insulation to put in walls. Places only have the stuff for attics. I also can't find a good web site that tells how to do this. If anyone can help please do. I want to get it done before winter since gas prices are going to be so high. I got a couple of companies to look at it i gues i wasnt expecting it to cost so much. If anyone knows of someone cheep please let me know.

Any of the cellulose insulation can be blown in to the walls
Work real good .

ED ;)