sonicwall pro and vpn client setup

We have sonicwall pro with the vpn client license. I want to be able to access the main file server on our lan via sonicwall vpn client version 3.02. We also want to host our web site and email server (which we are currently doing). We only have 1 public ip address given to us by our ISP. We are looking at changing ISP’s, which will give us several IP addresses via NAT from the ISP’s router.

My questions

Will we be able to access the lan via vpn, as well as host our web and email servers with this new IP address scheme? And how should we configure this?