Resident Evil 3: Nemesis

*WARNING SPOILER*
There are 2 ways that I know that the S.T.A.R.S I.D card is. The first is when Nemesis kills Brad Vickers. You then are given 2 choices in this situation, choose the won that says "fight the monster", then quickly run towards Brad's body and you should see a wallet like object.
Check it and you should see an ID card in it and says that its Brad's ID.

The other Id where is in the conference room. To go to the conference room starting from the entrance of the R.P.D is: go to the only open door close to the computer place, kill the zombies, go to the next room, go to the next room and kill zombies (again) and go to the door next to you. You should either encounter the dogs or the zombies, then go to the conference room that has 2 doors. There are no enemies here and the card is in the direction you are facing. There is a stand where the chief talks and there is a board behind it, to the right you should see something shiny and its Jill's card. If you still can't find it, there are probably scratches in your disk. Sorry for long answer.