Installing asa5505 between Comcast SMC switch and inside address

I am going to install an ASA5505 security appliance between my SMC appliance and my inside network.  I already have the 5 static IP addresses but would like guidance on what I need to change on my Comcast router and what information do I need to configure my ASA (see below)

• I assume I use one of my static IP addresses for the outside interface of my firewall
• Is there a specific domain name I should assign to the ASA
• I plan on enabling the DHCP server on the ASA. Should I use auto configuration on my outside interface or manually input the DNS and WINS IP Addresses. If manual, what IP addresses should I use?