I assume that you already have Paint shop pro 7 or highter version
in your machine. If not download it and install it in your machine.
Now open the psp / corel software.
open new image with 200 x 400 height pixel. (note: you can adjust
height according to your need. If you want longer pages you may
need height 500 or 600 instead of 400 and viseversa if you need
smaller page.)
Using fill tool fill it with any gradient color of your choice.
Now click on Image menu then canvas size
A pop up box will open up. setting should be
like this. It would double your canvas size in length.
Now click on Layer menu then click on
Duplicate.
then click on Image menu then click
on Flip. Now your gradient will fill the transparent area.
Again click on Image - Canvas size and
setting should be like this. New width of your image will be 1px
and height will be 800px.
Now save the image in .jpg format. For example
I have given file name as gradbg.jpg
Your html tag should be like this <html>
<head>
<title>Your page</title>
</head>
<body class="gradient"
text="#000000">
<p>your text goes here.
</p>
</body>
</html>
----------- Note: In your html file you
need to add the css code
before body tag as shown above and add class in body <body
class="gradient"
text="#000000">
Add background color which matches with your image.