I ended up adding conditionals around sig link in the USERCP_SHELL template.
Find:
Code:
<if condition="$show['siglink']">
<tr>
<td class="$navclass[signature]" nowrap="nowrap"><a class="smallfont" href="profile.php?$session[sessionurl]do=editsignature">$vbphrase[edit_signature]</a></td></tr>
</if>
Change it to:
Code:
<if condition="$show['siglink']">
<tr><if condition="$bbuserinfo['posts'] > 10">
<td class="$navclass[signature]" nowrap="nowrap"><a class="smallfont" href="profile.php?$session[sessionurl]do=editsignature">$vbphrase[edit_signature]</a></td></if></tr>
</if>
Works perfect....