Netzero and Juno both used to offer the free (10 hrs. a month). I've used them until recently,...when I think the service has been discontinued. When I logged into my accounts,...I would get taken to a screen that was promoting the paid service. I can STILL use them both for free e-mail accounts,...just not dial-up. The cheapest
dial-up that I've found (which I am right now using in Linux),.....is VTISP.http://www.vtisp.com
.... (150 hrs. a month). Cheap enough for me http://www.freedomlist.com/
You might find some info at this site....It sometimes gets a bit out-dated,..but it's where I learned about little "cheap" dial-up (that works in Linux)....