Does anyone know of a whiepaper on how to loadbalance Microsoft ISA 2006 or have a gone through this?  We just moved to the ACE modules and seem to be having problems with ISA (proxy servers) be loadbalanced through the ACE modules.   Users can't access the internet off and on.  Below is what is setup for the ISA portion on the ACE:  Any help would be much appriciated. 
rserver host isa01a
  ip address 10.97.198.61
  inservice
rserver host isa01b
  ip address 10.97.198.62
  inservice
serverfarm host isa01
 probe tcp-8080
 rserver isa01a
   inservice
 rserver isa01b
   inservice
   
class-map match-any l4-vip_isa01
  2 match virtual-address 10.97.198.60 tcp eq 8080
  policy-map type loadbalance first-match l7_slb_isa01
  class class-default
    serverfarm isa01
 
 class l4-vip_isa01
    loadbalance vip inservice
    loadbalance policy l7_slb_isa01
    loadbalance vip icmp-reply active
    nat dynamic 1 vlan 198