There are two ways to get your guest up on the network. One, it can use a "bridged" network connection, which causes it to act like any other host on your LAN - you can give it a static or it can get a DHCP address.
The other way, if you only need to get to your guest from its host, is a "private" virtual network. There's a virtual network setup thing somewhere in the VMware control panel.
If you took all the defaults, your RH system is using a bridged network and a DHCP address. Log in to it through the virtual console, and do "ifconfig". You will see in there somewhere what address it is using. Then you can ssh to that address via Putty. Giving it a static would probably be better, long-term.