istallazione ajax chat, riga inesistente. urgente, per favore

Salve, sto eseguendo l'estallazione di ajax chat sul mio phpbb3.1.4 con stile derivato dal prosilver.
eseguendo la guida "istaller" mi dice:
Open: styles/prosilver/template/index_body.html
Find
Tip: This may be a partial find and not the whole line.

<!-- IF U_MCP --><p>{CURRENT_TIME} <br />[&nbsp;<a href="{U_MCP}">{L_MCP}</a>&nbsp;]</p><!-- ELSEIF S_USER_LOGGED_IN --><p>{CURRENT_TIME}</p><!-- ENDIF -->

Add after
Tip: Add these lines on a new blank line after the preceding line(s) to find.

<!-- INCLUDE tag_board.html -->

Io eseguo il percorso ma nel mio stile, ma la riga "<!-- IF U_MCP --><p>{CURRENT_TIME} <br />[&nbsp;<a href="{U_MCP}">{L_MCP}</a>&nbsp;]</p><!-- ELSEIF S_USER_LOGGED_IN --><p>{CURRENT_TIME}</p><!-- ENDIF -->" non c'è .-.

Guardate:

<!-- INCLUDE overall_header.html -->

<div class="fancy-index"></div>
<!-- IF RECENT_TOPICS_DISPLAY --><div class="index-right"><!-- ENDIF -->

<!-- EVENT index_body_markforums_before -->

<!-- IF RECENT_TOPICS_DISPLAY -->
<!-- IF ADS_INDEX_CODE and not S_IS_BOT -->
<div class="misc-block advertisement">{ADS_INDEX_CODE}</div>
<!-- ENDIF -->
</div><!-- /.index-right -->
<div class="index-left">
<!-- ENDIF -->

<!-- EVENT index_body_markforums_after -->

<!-- INCLUDE forumlist_body.html -->

<!-- EVENT index_body_forumlist_body_after -->
<!-- EVENT index_body_stat_blocks_before -->

<!-- IF S_DISPLAY_ONLINE_LIST -->
<div class="stat-block online-list">
<!-- IF U_VIEWONLINE --><h3><a href="{U_VIEWONLINE}">{L_WHO_IS_ONLINE}</a></h3><!-- ELSE --><h3>{L_WHO_IS_ONLINE}</h3><!-- ENDIF -->
<p>
<!-- EVENT index_body_block_online_prepend -->
{TOTAL_USERS_ONLINE} ({L_ONLINE_EXPLAIN})<br />{RECORD_USERS}<br /> <br />{LOGGED_IN_USER_LIST}
<!-- IF LEGEND --><br /><em>{L_LEGEND}{L_COLON} {LEGEND}</em><!-- ENDIF -->
<!-- EVENT index_body_block_online_append -->
<!-- IF U_VIEWONLINE --><a class="online-pagelink" href="{U_VIEWONLINE}" title="{L_WHO_IS_ONLINE}">{LAST_POST_IMG}</a><!-- ENDIF -->
</p>
</div>
<!-- ENDIF -->

<!-- IF S_DISPLAY_BIRTHDAY_LIST -->
<div class="stat-block birthday-list">
<h3>{L_BIRTHDAYS}</h3>
<p>
<!-- EVENT index_body_block_birthday_prepend -->
<!-- IF .birthdays -->{L_CONGRATULATIONS}{L_COLON} <strong><!-- BEGIN birthdays -->{birthdays.USERNAME}<!-- IF birthdays.AGE !== '' --> ({birthdays.AGE})<!-- ENDIF --><!-- IF not birthdays.S_LAST_ROW -->, <!-- ENDIF --><!-- END birthdays --></strong><!-- ELSE -->{L_NO_BIRTHDAYS}<!-- ENDIF -->
<!-- EVENT index_body_block_birthday_append -->
</p>
</div>
<!-- ENDIF -->

<!-- IF NEWEST_USER -->
<div class="stat-block statistics">
<h3>{L_STATISTICS}</h3>
<p>
<!-- EVENT index_body_block_stats_prepend -->
{TOTAL_POSTS} &bull; {TOTAL_TOPICS} &bull; {TOTAL_USERS} &bull; {NEWEST_USER}
<!-- EVENT index_body_block_stats_append -->
</p>
</div>
<!-- ENDIF -->

<!-- EVENT index_body_stat_blocks_after -->

<!-- IF RECENT_TOPICS_DISPLAY --></div><!-- /.index-left --><!-- ENDIF -->
<div class="clear"></div>

<!-- INCLUDE overall_footer.html -->

come posso fare ? dove posso inserire <!-- INCLUDE tag_board.html --> ?

Per favore datemi un consiglio....

edt: controllando, andando allo stesso percorso nello stile prosilver styles/prosilver/template/index_body.html
lo stesso manca la riga
edit2: manca anche il file common... scusate, forso sono io che sono neofita, troppo. ma è compatibile con phpbb3.1.4? laversione di ajaxchat e: AJAX_TAG_BOARD_4_PHPBB3_v3.0.7