You can check out these sites for picture cursors; some sites already have the code ready just copy and paste it.
Cute Cursors
Picture Cursors AutoScripter
Anicursors
Cursors (Girly)
Over 4,000 Free Cursors
Yoshi Cursors
Soup-Faerie Cursors

To put a picture cursor:
<style type=text/css><!-- body{cursor:url(HTTP://URL OF CURSOR HERE.JPG)} //--></style>

The cursor types are crosshair, hand, help, wait, text, move, no-drop, not-allowed, n-resize, w-resize, nw-resize, ne-resize, col-resize, row-resize.

To put a regular cursor, replace CURSOR TYPE in the code to a cursor type listed above:
<style type=text/css><!-- body{cursor: CURSOR TYPE } //--></style>

To change the cursor when it goes over a link:
<style type=text/css><!-- a:hover{cursor:CURSOR TYPE} //--></style>