This is tutorial for how to make a nice background in 4 easy steps using photoshop 7.
Go to File > New > Choose canvas size ( I used 640×480)
Choose 2 colours of your choice,I used light blue and red
Now Go Fliter > Render > Clouds
You Should Get:
Now Go Filter > Pixelate > Mezzotint, Select type: Short Lines and hit Ok.
Now Go Filter > Blur > Radial Blur and use the same settings as below,
You Should end Up With: