making an xml for the first time

[Michael.A]

i want to overwrite a Template in postbit_legacy using an xml?

exp:-

<div>$post[icqicon] $post[aimicon] $post[msnicon] $post[yahooicon] $post[skypeicon]</div>
			</div>

to

<div>$post[icqicon] $post[aimicon] $post[msnicon] $post[yahooicon] </div>
			</div>

how can i do that?

thanks.