driver signing is done for assuring that it is produced by the manufacture & it's not altered by others .. if it works fine leave it.. no need to worry about it..
SM bus drivers are packed with chipset drivers..have you installed it
Thanks for replying. Yes, you are right I see now. However, I can't find the driver for Network Adapter or the chipset drivers in Vista. I can't go online to get them from HP (legacy manu.)or ASUS (motherboard). The MB is an ASUS IPIBL-LB (HP name: Burbank-GL8E