How do I tell my jquery script to use something else than $ ?

Do I have to change all the $ to _$ ?

This is my script

$(document).ready(function() {
$('.slideshow').cycle({
      fx: 'fade',
      timeout: 6000
   });
});

Works like a charm. Thank you!

To expand on biapar's reply, something like this will stop your custom scripts from interfering with other scripts already using the $ namespace / function:

$.noConflict();

jQuery(document).ready(function() {
jQuery('#myid').click(....)
});