So in 5.8 I can do DHCPv6... But... I dont know how ? Whats the very basics for setting this up to work with my ISP ?

Currently RouterOS supports only DHCPv6 PD. Instructions are in the manual:
http://wiki.mikrotik.com/wiki/Manual:IP ... up_example

Please be patient with my IPv6 noobyness..

So in winbox on my existing DHCP Clinet entry simply checking the IPv6 PD box and then creating a name for my pool and saving this should do it ? The pool is created dynamically once the DHCPv6 PD gets a PD right ?

Is so that sucks as it shows searching, so my ISP has not turned on this yet. They say they will sometime in the next 2 months...