1st one is called cursor trails, im not sure if these codes works but you copy and paste it into your page and change the image url, i think you would replace the ".gif" parts, but i didnt really look at the code.
http://members.core.com/~rnbovara/cursortrail.html
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snow fall- change the image url
http://www.hypergurl.com/easyhtml.html
http://members.core.com/~rnbovara/cursortrail.html
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snow fall- change the image url
http://www.hypergurl.com/easyhtml.html