SELECT DISTINCT TOP 100 PERCENT Member_Id,
   RTRIM(CAST(DATEPART(yyyy, [Interval]) AS char))
   + '.' + RTRIM(CAST(DATEPART(mm, [Interval]) AS char))
   + '.' + RTRIM(CAST(DATEPART(dd, [Interval]) AS char)) AS Dates,
   RTRIM(CAST(DATEPART(hh, [Interval]) AS char))
   + '.' + RTRIM(CAST(DATEPART(mi,[Interval]) AS char))
   + '.' + RTRIM(CAST(DATEPART(ss, [Interval]) AS char)) AS Times
FROM dbo.Detail

What comes back looks like this:
2001.10.16,0.2.0 and I bet if the month or day are single digits it would look like 2001.1.1

What I want is 2001.01.01 00:02:00, i.e something that looks like a date.

Since I have no control over the final interface I need to deliver the data in this format.

How do I pad zeros in front of single digit values?

TIA