Capital gain query

I have this query in capital gains chapter.....a residential house was sold for Rs.25 lakh in the fy 08-09 the land was acquired in the fy 94-95 and the building was constructed in the fy 96-97 . My query is while calculating the capital gains the indexed cost of acquisition of house how it will be calculated . 

will there be two indexation , one on land in fy 94-95 and other on 96-97 or combined the cost of land and construction and indexation of 96-97 on it done??/ please guide in this regard.