Cisco WAN :: ASA 5520 - Implement With A New ISP

We are attempting to implement an ASA 5520 with a new ISP.  Based on the limited routing needs, I believe we can use it as the router as well. I am familiar enough with routers, but the ASA is obviously a different thing.
 
The setup looks like:
 
ASA Version 8.2(1) !
host name Cisco
 interface GigabitEthernet0/0description Internet name if Outsidesecurity-level 0ip address 69.XX.46.1 255.255.255.252 !interface GigabitEthernet0/1
description DMZnameif DMZsecurity-level 0ip address 69.XX.56.1 255.255.255.240
!interface GigabitEthernet0/2description Localnameif Insidesecurity-level 15ip address 10.0.XX.XXX 255.255.252.0
[Code] .....

1) Outside 0/0 connects to MRV from service provider (Public)
2) DMZ 0/1  connects to outside switch with servers (Public)
3) Inside 0/2 is LAN (Private)
 
A) Based on a completely default config and aside from setting the routes to send traffic from inside to outside, and outside to DMZ, what is the next step?
 
B) What should the interface security levels be, I am unsure what they should be or why...?
 
Based on the initial config with interfaces set as above, I cannot move traffic through.