I want to change masterpage for my sharepoint site collection .
I created my custom master page and set it as Site Master Page.
Now I want to create a system master page which has left navigation menu.
How do I make sure that the left navigation is present and I want to be able to write CSS for this.
should I use two master page files ? or can i use the same for both ?
Srikant Nandakumar SharePoint Server Enthusiast.