Wireless hardware

Dear Techrepublic,

I’m on a quest to setup a secure wireless access point with an ADSL connection (ADSL without router) for about 20+ laptops. what i need is a list of all hardwares besides the internet connectivity to make this happen. i would like the laptops to pickup the signal and it will reach the device’s homepage and have users login with accounts & password inorder to surf the web.

all i know is: ADSL + Wireless G access point.