How Do I? (Regarding Avatars)

[g0dfather1984]

To change the size of avatars, I need to replace the following text bolded with image size attributes:

<if condition="$prepared['avatarurl']">
<td><img src="$prepared[avatarurl]" alt="<phrase 1="$prepared[username]">$vbphrase[xs_avatar]</phrase>" $prepared[avatarsize] class="alt2" id="user_avatar" /></td>
</if>

I have tried that and it still doesn't work. What is the proper coding I'd enter for this? I want the avatars to be 115x115

Thank you for your help!