Simple photoshop help

Hey well recently my computer had a virus and it wiped out all my photoshop settings.

Now the one thing that bugs me the most is that my background when i open a new image is white instead of the checker pattern i used to have it as. Its hard to do anything like this so if anyone could remind me how to change it back thatd be great!
P.s.-inm using cs4

Thanks,
Lukef555

 

The checkerboard pattern is called "transparent"
When you make a new Document, instead of a white backround, choose the Transparent backround from the drop-down list.

 

Thanks!
I knew it was called something haha.
Brainfart