partner and standard submit for are the same... submit_main.tpl
perm galleries:
<%PERMANENT
TYPE Text
CATEGORY Mixed
AMOUNT 5
HTML Default PermThumbs%>
on top of your template you have to define 'PermThumbs'
like
<%TEMPLATE
NAME Default PermThumbs
HTML <td align="center"><a href="/cgi-bin/tm3/l?g=2&f=2&c=gall&u=##Gallery_URL##" target="_blank"><img src="##Thumbnail_URL##" width="100" height="100" border="1"><br></a>##Thumbnails## pics</td>
%>