Warehouse Selection in Sales Order

Hello to all,

                  I have an issue regarding selection of "Warehouse" while creating Sales-Order in Ax-2009.

                                                                                   What i have to do is that, during creation of Sales-Order, after selection of Site Location, i have to enable only that "Warehouse" which is assigned to current User and disable other "Warehouse".

                                                       Can any one suggest me solution to this problem.

Thanks in advance

Pranav Gupta.