pda based food order system vb.net

Using the SGL Mobile Edition Database and VB.NET. 2 system must be developed . first for the user use to order food using PDA. second for the admin use to key in the food items. languange is vb.net database is sql compact editn. must acces database frm desktp using pda So now I want the user 1st interface key in id and password , that data will be save in database. Then the 2nd interface, the user will choose either vege or non-vege food option available. Third is most important where the user will add item or delete items. Here the user is choose the add button or delete button. If the food is not available then the user cannot add or delete . The list of food in PDA is where the admin added before using PC categorize into vege or non-vege. The admin must make that food list accessible or cannot using their PC according to their availability. Then the last page of user interface in PDA is the show the list of food they choose and total prize of the food they add before include with fix small amount(GOV Tax).