Service Tier Capabilities

Hi

I havent been able to fully investigate NAV 2009 myself yet so wondered if anyone knew these answers?

1) Presumably multiple service tiers can be created that access the same db, but can these be load balanced in anyway other than manually configuring each client to connect to a service?

AX has a rudimentary load balancing system where an AOS server instance (esstentially the service tier instance) can be configured to check to see which AOS servers have the least clients connected - is this something that can be achieved with NAV 2009?

2) Can the service tier utilise multiple processors?

3) Is there a 64 bit version of the service tier?

Thanks