Run the script.
It will auto open a digital sized image. just click OK
If you don't have Eyecandy it will skip this part. Click OK
And you will have a shadowed line finished for you.
Save is as a psp file.
Now to finish it out, click on the selection tool - rounded rectangle
Start at the corner of the line and draw it out to surround the line.
Click on Selections/Modify/Contract 1pixel
It should end up something like this.
Add a layer and drag it under the line layer.
Now fill with a color you like
If you see the color is still outside the line a little....
click on the deformation tool and resize the color line to fit.
Merge the two layers and save as a psp file to use over and over.