[007]

Yes, in the postbit/legacy (whichever you are using) template, replace:

		<if condition="$post['signature']">
		<!-- sig -->
			<div>
				__________________<br />
				$post[signature]
			</div>
		<!-- / sig -->
		</if>

with (replace XX with the forum ID you want to exclude)

		<if condition="$post['signature'] AND $forum[forumid]!=X">
		<!-- sig -->
			<div>
				__________________<br />
				$post[signature]
			</div>
		<!-- / sig -->
		</if>

Hope that helps.