I found some things about what the MS connection manage is-
http://support.microsoft.com/kb/234762
http://support.microsoft.com/kb/221119
http://www.windowsitpro.com/Windows/...4981/4981.html


I googled this too- "using AOL & a second ISP dialer "
http://www.google.com/search?q=using...&start=10&sa=N

but if the free isp works for you then you wouldn't even need the AOL anymore anyway.
if it doesn't you could delete/uninstall the free one and reinstall the AOL???
but other than that I don't know much more about it and I wouldn't want you to do something that might kill your PC - so it's up to you..

sorry I'm not much help on more of the details...