LAN design

Hello,

I work in a company that has this flat poor lan design as shown
below :

[img]C:\Documents and Settings\Devamine.DATAEMBASSY\Bureau\DE.jpg[/img]

I want to redesign it, i want to create subnets for each department in the company:
the depts are : Marketing,Computing,Workers
I have 2 Public IP addresses 3 DSL-routers and a lof of switches
and i have a web server and FTP server that must be available to the
public, I also use windows 2000 AD I have a domain name.
The whole must have access to the internet.

I want just to see your suggestions how to make it better, Thanks for your help.

Sorry,

Sorry for the image i just know that i must have it via Http:
anyways the design is pretty simple :

Internet
|
Route1 Route2 Route3
|
Switch1 Switch 2
| |
MarKeting Computing Workers WebServer FtpServer

the whole have 192.168.0.0\24 network



if it's possible to have the response in visio file thanks for all.

Hi


Well here is the image of my network diagram

http://www.ratemynetworkdiagram.com/?i=876

thanks for all