I use a Nesco brand American Harvest dehydrator. It has an adjustable temperature control right on the top. It goes from 95° F to at least 150° F, in 10° increments. I usually run mine at the low end, but occasionally I'll bump it up to 110° if I feel like it may take more heat to cure the paint.
This is a picture of the type I have (this isnt my dehydrator, cant find the pics I have of the one I own), pulled this pic from ebay.
http://cgi.ebay.com/NESCO-American-H...QQcmdZViewItem