Running Croquet examples across WAN

Hi,
    I have a croquet application. I  need to run across the WAN.
    I run the croquet router script

dispatcher := TExampleDispatcher new.
dispatcher listenOn: 4321. "fixed port"
dispatcher autoCreate: false.
"Create a router"
router := TSimpleRouter new.
router addUserName: 'guest' password: 'guest'.
dispatcher addRouter: router id: sessionID.

 Is this enough. Do i need to run participant script to run standard croquet applications.
 But i found TSimpleController doesnt have connect: to: method.
 I am not able to compile.

 I also want to know,whether applications run in different VLAN colloborate?

Thanks for any help.

Rgds
Kiran