Display annual Leave Dates by employee

I am still new to these excel formulas, now and again I pop back for your help !!

I have begun to compile a staff annual planner which has been ok to this point, now I am stuck.

Within the attached excel file on the worksheet "holiday form 2012-2013", there are cells underneath "Holiday Dates already booked" and I want to show all dates previously booked by each employee, on the same page the employee ID no can be selected and is linked to other worksheets showing annual leave entitlement, annual leave booked and remaining which is linked to worksheets PLANNER FEB 13 - 31ST MAY 13,PLANNER JUNE 12 - JAN 13

Can one of you helpful peeps guide me in the right direction or even post the code for me please !!

Thanks in advance

J