Trying to reload the Acer Realtek High Definition audio drivers on an Aspire 5050. Running XP SP2, rebuilt from scratch on a new HD. The audio driver package (from Acer site) fails at end with "Microsoft bus driver should be loaded in your system before installing Realtek Audio Driver!". I have downloaded patches kb835221, kb888111xpsp2, and kb888111 and tried installing each, rebooting and then reruning the Realtek setup. Still get the bus drive message. Ideas?