(11:30:21) me: tip: go live on one test vlan and amke sure it works there before enable it everywhere
(11:30:32) notbigenough2:  vlan-interface x dhcp-server 1
(11:31:17) me: That sounds sane.
(11:31:50) me: I'd say, enable it for subnet 4 (and disable it on subnet 4 on the 1i or whatever is doing it now) and run with it that way for a few days.
(11:31:57) notbigenough2:  Tried it yesterday on vlan 4 and it seemed to work 
(11:32:02) notbigenough2:  then disabled it
(11:32:25) me: let it run for a few days.
(11:32:28) me: phase it in manually
(11:32:36) me: er, gradually
(11:33:18) me: and send email to everyone before you do it letting them know that you're making changes on vlan XX and to contact you IMMEDIATELY should they observe any problem.
(11:34:36) notbigenough2:  Well have a window on thursday morning so would send out mail to ITI and let them now that I am going to enable vlan4 for dhcp relay on the 7700's and disable it on the 1i and to let me know of any problems