I accidentally deleted "Yesterday" folder from my history. How do I create a new one? Can't find a New Folder button.

I am assuming that you are running a PC and not a Mac computer.

If you keep on browsing the Internet, it should automatically make new folders for each day. You can set it up for how many days it will remember your history of surfing in Tools and the Internet Options at the top of your Internet Explorer browser, if that is what you are using.

If you are wanting to go back to places where you have been yesterday, then the URL's for those places might also be in your Cookies folder. To find that folder without going through a bunch of other folders to find it, go to Start and do a search for Cookies in All Files and Folders.

Clough,
I am using Netscape. Deleted all history yesterday and today only "Today" shows up in history folders.Hopefully new folders will be created.

Depending on how your current window is configured. Say for example: if you can you see the address bar at the top of the open window, just below the buttons, click on the drop-down arrow at the far right of the address bar and a drop-down window will appear with at least some of the website the computer has visited. I find that easier than going after cookies (except the one's my wife hides from me in the cupboard )