[kh99]

Yes, edit the register template and search for vbulletin_ajax_nameverif.js. That should make it easy to find the block of code below and add the <vb:comment>...</vb:comment> tags around it:

<vb:comment>
	<script type="text/javascript" src="clientscript/vbulletin_ajax_nameverif.js?v={vb:raw vboptions.simpleversion}"></script>
	<script type="text/javascript">
	<!--
		regname_verif = new vB_AJAX_NameVerify('regname_verif', 'regusername');
	//-->
	</script>
</vb:comment>