SQL Question

I'm trying to edit the existing 95th percentile report to only include certain interfaces that all contain specific text in the caption.  I have little experience with SQL and have been trying to find the right answer with Google but have been unsuccessful, hoping someone can help.

Here is the existing report SQL:

SET NOCOUNT OFF

SET ROWCOUNT 0

DECLARE @StartDate DateTime

DECLARE @EndDate DateTime

SET @StartDate = DATEADD(d, DATEDIFF(d, 0, DATEADD(m, -1, DATEADD(d, 1 - day(getdate()), getdate()))), 0)

SET @EndDate = DATEADD(ms, -2,DATEADD(d, DATEDIFF(d, 0, DATEADD(d, 1 - day(getdate()), getdate())), 0))

SELECT Interfaces.InterfaceId,

  Nodes.NodeID,

  Nodes.Caption AS NodeName,

  Nodes.VendorIcon AS Vendor_Icon,

  Interfaces.Caption AS Interface_Caption,

  Interfaces.InterfaceIcon AS Interface_Icon,

  Maxbps_In95,

  Maxbps_Out95,

  Maxbps_95

FROM Nodes

INNER JOIN Interfaces ON Nodes.NodeID = Interfaces.NodeID

INNER JOIN (

  SELECT InterfaceID,

  dbo.GetInBps95th(InterfaceID, @StartDate, @EndDate) AS Maxbps_In95,

  dbo.GetOutBps95th(InterfaceID, @StartDate, @EndDate) AS Maxbps_Out95,

  dbo.GetMaxBps95th(InterfaceID, @StartDate, @EndDate) AS Maxbps_95

  FROM InterfaceTraffic

  WHERE InterfaceTraffic.DateTime >= @StartDate AND InterfaceTraffic.DateTime <= @EndDate      

  GROUP BY InterfaceID

) TrafficStat

ON Interfaces.InterfaceID = TrafficStat.InterfaceID

ORDER BY NodeName, Interface_Caption

I need to filter the results to only show interfaces with text that contains D49,  is that possible?

Any help would be appreciated.