Touch screen monitor to deskoip


I have a person who has a desktop computer that she wants to add a touch screen monitor. She know has two monitors but the built in graphics will not let her replace one of the monitor for touch screen without adding a new graphics card… The computer has a PCI slot to add it but I cannot figure out what card to tell her to buy. She does not need a gaming card just one so she can use the touch screen. The Microsoft Touch Pack for Windows 7 says she needs one that is 128 MB 3D video card with Hardware Textures & Lighting and DirectX 9.0 or later capable video card. can you help me figure out what card to get for her.