Initial 3 months quantities

Hi,

We have several Item codes from different manufacturers. Each of the item codes have different Introduction Month.

For ex: Item1 is introduced in Jan1995, Item2 in Feb2006 etc.

Every month we get the report for all the Item codes. Here is our reporting requirement.

(Initial 3 months from Intro month)

Item1 publisher1 quantity

Item2 publisher2 quantity

Any suggestions are greatly appreciated and rewarded.

Thanks,

Vish