I have created one table in access with field site,dealer and D_date
my data is like as follow

site dealer d_date
delhi asian 23-10-11
delhi led 24-10-18

so on.......

now i want haveing two combobox list of site and dealer in form when i press show button in form i need
if todays date is mor then 3 years of d_date then show msg. " out of warranty....

i am using access 207 and vb net basic 2008