I wanted a search added to the userlist. I was ready to rock, but all that was actually needed was a small template change.
in /templates/default/showmembers.tpl
find:
Add below:
<tr>
<td align="center" class="alt-1">
<form method="get" action="{ubb url=""}">
<input type="hidden" name="ubb" value="showmembers" />
<label for="like">Find usernames starting with:</label>
<input name="like" value="" size="15" maxlength="15" />
<input type="submit" name="sendit" value="Search" class="form-button" />
</form>
</td>
</tr>
