Advice on a Flash Project

i'm upto do a flash project that will run in a Cd (something like buisness directory) main purpose of this project is to enable the user to search regarding the B.Directory and View the results. I just need to know which is a Best combination to do this flash-XML or Flash-Asp.

Also Need Guidelines for how to Structure this project. the database is Huge is
is it good to implement the project with xml. Will the searching the data be quick with this. can I able to use any thirdparty help like asp. if asp which datadase can i use. help me guys

our database is huge one and it is used for our website. Our main constrain is to (at best possible way ) keep data in the cd itself. so I think using Asp i have to keep the data in net which makes the application a little bit slow to retrieving the data. can we implement asp with the data on cd itself. if yes how and what are all the needs and necessities.

and also I'm considering implementation of XML. because if i start the project without this analyze probably it'll be a hard task to start it again.

I'm a newbie to Database structuring with xml. I just need your Guidelines.My Doubt is should i have to put all the categories in separate Xml files or in a Single file.
Ex consider this project for business directory . it has several Categories of Industry (ex Automobile , electronics). I'm going to have searches options like search by category search by company name, search by places. should i want to create separate xml for all this category. If i separate all the info in different xml how can i search the data for company name and Places. I just need the logic behind this search