Try this. You'll still miss a slot after the last record.

SELECT 
		DATEADD(minute, 1, m1.endTime) AS SlotBeginTime,
		DATEADD(minute, @gap, m1.endTime) AS SlotEndTime
	FROM meetings m1 
	JOIN meetings m2 ON m2.beginTime > m1.endTime AND m1.roomID = m2.roomID
	WHERE DATEDIFF(minute, m1.endTime, m2.beginTime) >= @gap+1
		 AND m2.BeginTime = ( SELECT MIN(m3.BeginTime) FROM meetings m3 
			WHERE m3.beginTime >= m1.endTime AND m3.roomID = m2.roomID )

>Michael
>
>That one returned me two identical records that overlapped an existing case.
>
>Current Data:
>

>RoomID      BeginTime                EndTime
>14          01/25/2002 07:30         01/25/2002 08:25
>14          01/25/2002 08:33         01/25/2002 10:28
>
>

>
>The result set returned:
>

>RoomID       BeginTime              EndTime
>14          01/25/2002 08:26        01/25/2002 09:26
>14          01/25/2002 08:26        01/25/2002 09:26
>
>

>
>Kirk