I uninstalled all my drivers, re-installed the latest one including the AMD APP SDK while rebooting in-between. Everything is reported to have been installed, yet GuiMiner doesn't list my card. My card is recognized under device manager, however if I try running the VS2010 OpenCL samples they fail to compile (I don't know if it's related to my problem, but might as well include the info).
*Sorry I'm an idiot. Mod, can you please delete?