Welcome to the Apple Support Communities
All Mid 2010 and newer MacBooks Pro, except the Mid 2010 13-inch MacBook Pro, are compatible with Windows 8, so you can use the Boot Camp 5 drivers. However, you can only install them on a 64-bit Windows 8 version, so if you aren't running a 64-bit version, install it. See > http://support.apple.com/kb/HT5634
You can get the drivers from the Apple website > http://support.apple.com/kb/DL1638 Also, follow the steps of this site in order to install the drivers. A dedicated graphic card has nothing to do with that