The reason for doing this was as follows:
I have a front end database that links to several backend databases which are picked off a menu. However the backend databases are relative to one of two years and work off one of two sets of dates which are held in another database, so it was just for a short cut to get the front end to look at the right set of dates by having the backend already linked into to the correct date table.
However, i have now got round the problem by making the front end database creat its own internal date table to fit the backend that it connects to.
Thanks anyway for your feedback