Hi Max, In the cases where there are two disks to a county, e.g. Yorkshire and Lancashire, the data file on each disk is identical, it is just the indexes which are different. This is because in any address there might be a couple of ADAMS and a SMITH. The new reader just does a better job of searching the data. Best regards - Mike Simpson, Penrith, NSW, Australia Email: agene@tpg.com.au HomePage: http://www.bigfoot.com/~agene