always provide servers with their own public IP instead of using the outside IP of the firewall

I'm running Microsoft Windows SBS 2008 with an ASA5505 firewall that my old ISP configured for me.
configuration:static (inside,outside) x.x.x.59 192.168.x.2 netmask 255.255.255.255
access-list 110 permit tcp any host x.x.x.59 eq 25
access-list 110 permit tcp any host x.x.x.59 eq 443
access-list 110 permit tcp any host x.x.x.59 eq 987
access-list 110 permit tcp any host x.x.x.59 eq 1723

My outside Ip x.x.x.58 with a x.x.x.57 gateway and the host x.x.x.59 configured on my ASA 5505.
I'm trying to mirror this configuration on my Sonicwall nsa240 with new IP's.

P2P IP: x.x.x.60/30 NPE(.61) Customer(.62)
P2P Subnet: 255.255.255.252
Customer’s Usables:
Customer Allocation: x.x.x.120/29
Customer Allocation Subnet: 255.255.255.248
I'm thinking
configuration:static (inside,outside) x.x.x.121 192.168.x.2 netmask 255.255.255.255
access-list 110 permit tcp any host x.x.x.121 eq 25
access-list 110 permit tcp any host x.x.x.121 eq 443
access-list 110 permit tcp any host x.x.x.121 eq 987
access-list 110 permit tcp any host x.x.x.121 eq 1723
But not sure how to accomplish on Sonicwall nsa240
tstropAsked:
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R_EdwardsConnect With a Mentor Commented:
try this site.
http://www.techkaki.com/2011/10/how-to-setup-sonicwall-nsa-240-firewall/
also i have attached the sonic wall getting started guide, look at pages 53, 57(for NAT)
SonicWALL-NSA-240-Getting-Starte.pdf
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