How to use these styles:

For PhotoShop Elements users (Versions 5 and 6):

Photoshop Elements 5

(C:) > Documents & Settings (Vista computers: substitute Program Data for Documents and
Settings) > All users > Application Data > Adobe > Photoshop Elements > 5.0 > Photo Creations 

Make a new folder with your layer style file name in the Photo Creations folder and paste the file into it.
 
Photoshop Elements 6

C: > Documents and Settings (Vista computers: substitute Program Data for Documents and Settings) > All Users > Application Data > Adobe > Photoshop Elements > 6.0 > Locale > en_us > Photo Creations > Layer Styles.

Follow this link for a tutorial on installing styles in PSE6 http://www.scrappersguide.com/video_tutorials/lindas_tip/install_layer_styles_pse6.html

For Photoshop users (Versions 5 and above):

Copy the styles (.asl) file to Applications > Photoshop. 

To load these new styles:

1. Open Photoshop. Open the Styles window (Window > Styles). 

2. Click the triangle at the top right corner to display drop-down menu with choices. Select "Load Styles". Navigate to the location you placed the new styles (.asl) files and select "Load". (In ImageReady you will need to use "Append Styles")

3. Your new styles should now appear in your styles palette  are ready to work with your new styles. Simply select the style you want and apply it to your layer.

For PaintShop Pro users:

1. Copy the PNG files to a location of your choice.

2. Open PaintShop Pro and then open these PNG files from the program.

3. Choose to place them into your "Patterns" folder and then you can select them from your materials palette.

For use in other programs:

You should be able to open the PNG files and use them as fills. You can also tile them together to create a larger area of the style.