Best way to get data from database

[VincentAngel]

This is not so easy to explain, but I'll try my best

There is an application sw for mobiles that you can download and then receive alerts of an specific area (sports, music, etc). When you donwload this sw you can register and create a profile. This information is keep it in a database from a server. I have acces to that server.

I have also different mobile pages (in another server) and I want to identify the people that have acces to them with this database.

My first thought is that I can create a cookie when they create their profile, however if the cookie is delete it, how can I create it again? also, for the people who has already registered...how can I give them a cookie? whit the alerts? this alerts are sended to the application with a xml format.

This application also have banners that are sended from a sw i have.

I appreciate any help or suggestion u can give me, Thank you

[Sl1ver]

for what platform is this?