[X-Unix] Remote access question

[Mark Philip]

Hi all,
 From my PowerBook, I wish to connect to my home iMac via the Internet 
and remotely control it via VNC. I've set up the VNC server on the iMac 
already.

This is the situation:

Hardware:
PowerBook (External Wireless or wired network) -> Internet -> Cable 
Modem -> Linksys Wireless Router -> iMac (Ethernet connected)

Software:
PowerBook: 	1) Jaguar
			2) VNC client

iMac:		1) Jaguar
			2) VNC Server

My concern is:
1)  PowerBook is assigned an IP from wireless network or DHCP server 
whilst on Internet.
2) The iMac is assigned a 192.168.1.102 address from the Linksys router.

How can I get to the iMac from the PowerBook?
Thanks in advance.
--
Best,
Mark.