2 gotcha, It is 12 months, I mentioned that there was a gap of 1 month Mar 2009. Tha is the main question. Can there be a gap in those 12 months? 2Ramesh Here is what I want to use: Jan09 Feb09 Apr09 May09 Jun09 Jul09 Aug09 Sep09 Oct09 Nov09 Dec09 Jan10 Total 12 months, but there are 2 months then ...