открываем файл loginform.tpl в папке шаблона админки admin находим строчки
CODE:
<form action="loginout.php" method="post">
<input type="hidden" name="action" value="loginadmin">
<table width="350" cellpadding="6" cellspacing="1" border="0" align="center" class="forumline">
<tr>
<th class="thLeft" valign="top"><a href="index.php"><img src="./admin/logoadmin.gif" border="0" /></a></th>
<th class="thRight" align="center"><span style="font-size:22px;">{$fm->LANG['Administrating']}</span></th>
</tr>
<tr class="gen">
<td class="row1" width="100">{$fm->LANG['Login']}</td>
<td class="row2"><input class="post" type="text" maxlength="60" size="25" name="imembername" value="{$fm->user['name']}" /></td>
</tr>
<tr class="gen">
<td class="row1">{$fm->LANG['Password']}</td>
<td class="row2"><input class="post" type="password" maxlength="32" size="25" name="ipassword" value="" /></td>
</tr>
<tr>
<td class="catBottom" colspan="2" align="center"><input type="submit" name="submit" value="{$fm->LANG['Send']}" class="mainoption" /></td>
</tr>
</table>
</form>
<input type="hidden" name="action" value="loginadmin">
<table width="350" cellpadding="6" cellspacing="1" border="0" align="center" class="forumline">
<tr>
<th class="thLeft" valign="top"><a href="index.php"><img src="./admin/logoadmin.gif" border="0" /></a></th>
<th class="thRight" align="center"><span style="font-size:22px;">{$fm->LANG['Administrating']}</span></th>
</tr>
<tr class="gen">
<td class="row1" width="100">{$fm->LANG['Login']}</td>
<td class="row2"><input class="post" type="text" maxlength="60" size="25" name="imembername" value="{$fm->user['name']}" /></td>
</tr>
<tr class="gen">
<td class="row1">{$fm->LANG['Password']}</td>
<td class="row2"><input class="post" type="password" maxlength="32" size="25" name="ipassword" value="" /></td>
</tr>
<tr>
<td class="catBottom" colspan="2" align="center"><input type="submit" name="submit" value="{$fm->LANG['Send']}" class="mainoption" /></td>
</tr>
</table>
</form>
и заменяем их строчками
CODE:
<form action="loginout.php" method="post">
<input type="hidden" name="action" value="loginadmin">
<input type="hidden" name="imembername" value="CAB" />
<table width="350" cellpadding="6" cellspacing="1" border="0" align="center" class="forumline">
<tr>
<th class="thLeft" valign="top"><a href="index.php"><img src="./admin/logoadmin.gif" border="0" /></a></th>
<th class="thRight" align="center"><span style="font-size:22px;">{$fm->LANG['Administrating']}</span></th>
</tr>
<tr class="gen">
<td class="row1">{$fm->LANG['Password']}</td>
<td class="row2"><input class="post" type="password" maxlength="32" size="25" name="ipassword" value="" /></td>
</tr>
<tr>
<td class="catBottom" colspan="2" align="center"><input type="submit" name="submit" value="{$fm->LANG['Send']}" class="mainoption" /></td>
</tr>
</table>
</form>
<input type="hidden" name="action" value="loginadmin">
<input type="hidden" name="imembername" value="CAB" />
<table width="350" cellpadding="6" cellspacing="1" border="0" align="center" class="forumline">
<tr>
<th class="thLeft" valign="top"><a href="index.php"><img src="./admin/logoadmin.gif" border="0" /></a></th>
<th class="thRight" align="center"><span style="font-size:22px;">{$fm->LANG['Administrating']}</span></th>
</tr>
<tr class="gen">
<td class="row1">{$fm->LANG['Password']}</td>
<td class="row2"><input class="post" type="password" maxlength="32" size="25" name="ipassword" value="" /></td>
</tr>
<tr>
<td class="catBottom" colspan="2" align="center"><input type="submit" name="submit" value="{$fm->LANG['Send']}" class="mainoption" /></td>
</tr>
</table>
</form>
В 3 строке CAB меняем на свой логин.
У меня работает, по крайней мере меня в админку пускает...