NAT Setup

[BanjoNut]

3Com tech support had me setup my 511u Office Connect Router

NAT: Enabled
Trans own address: Disabled
NAT IP Address: INTERFACE
NAT Masqueraded Network: 192.0.0.0
NAT Masqueraded Mask: 255.0.0.0
etc...

This does not work to let me designate a single IP
address in my LAN to work with the Router IP Address assigned to me by my ISP. I had no trouble setting the
same thing up at another location using a Bay Nortel router. Can someone point me in the right direction here? Can the 511u NAT be used to let those on the Internet access a single IP address within my LAN?

Thanks,
Steve (BanjoNut)