Need advice building a caller ID system

[OM2]

I've looked through the forum and can't see where to best ask this question... so I thought I'd try here

I want to build a caller ID system
A user calls up. The system should capture the number called from and then identify the user and bring up their details

I've investigated, and think I'm correct in saying that I need the old modems connected to a PC (for example). This then can be used to pass the phone ID. I've in the past seen 3rd party programs

What I'd want to do is some how pass to a web interface and then have this pull up records

Not sure where to start!

Any pointers would be great

Thanks


OM