If the card ran before you wiped the HD to reinstall then it should still work.
The problem may be that you need to find the correct driver. Windows 7 handles drivers differntly than XP so you should first see what driver it provides in the installer and via optional Windows Updates. If this doesn't work correctly import the latest driver from the PC or Device's Support Downloads webpage.
This is explained along with other steps to get a perfect Clean Reinstall Factory OEM