Removing unwanted registry entries?

["PMcOuntry"]

I tryed uninstalling some old drivers, no longer needed, and I get this
error:

Error Code:     -5009 : 0x80040703
Error Information:
>Ctor\ObjectWrapper.cpp (163)
>Ctor\ObjectWrapper.cpp (402)
>Kernel\Component.cpp (1163)
>Kernel\CABFile.cpp (389)
>SetupDLL\SetupDLL.cpp (1541)
pAPP:Realtek AC'97 Audio
PVENDOR:Realtek Semiconductor Corp.
PGUID:fb08f381-6533-4108-b7dd-039e11fbc27e
$11.50.0.42618
@Windows XP Service Pack 2 (2600) BT_OTHER 55456.18

It says close and it's still in the registry, now on earth do I get rid
of it?!

Thank you, going batty here!