How do I configure a MySQL Cluster with a redundant mysqld host?
A great place to get started with MySQL Cluster are these Quick Start guides:
http://mysql.com/products/cluster/get-started.html#quickstart

In terms of hardware profile, commodity servers are just fine - take a look at some of the recent benchmarks - 4.3m QPS across 8 x Intel dual socket servers with 24GB RAM:
http://mysql.com/why-mysql/benchmarks/mysql-cluster/

Hope this helps.  Let us know how you get along, and also go to the MySQL Cluster forum for direct access to engineering team: forums.mysql.com/list.php?25