Hi,
A good asp CMS is
www.aspnuke.com but personally dont have much time for asp...
Is there any particular reason why you want an asp CMS? IF PHP is an option for you, why not try a system such as Joomla -
http://www.joomla.com
It is ultra easy to use, is very stable and mature with an enormous support base, so if you need any help, its easy to get. Not to mention tons of great modules are available for it too.
Hope this helps
WebWiseG
www.webwiseworkshops.com