access my crm after the domain is destroyed

Dear Friend

i had a domain on server 2008 r2 and microsoft dynamic crm 4 with rollup 21

suddenly my domain crashed and we had no way to recover our domain

now we setup new domain  and join the crm to new domain

but we can not access the crm

i think i have to add authorize user in my new domain to crm database and config database

how can i do that ???

i have to recover this server not to setup new crm and import organization

please help me as soon as possible