I ordered a refurbished IBM T40 off of IBMs ebay site. The laptop is really nice. Thin and light, yet durable and such. Only complaint is that there is a pretty annoying red dead pixel about an inch down from the top of the screen and it is really visible on a black background. Anyways I did a reformat and reinstall of XP Pro and the only driver I cant find is one that windows lists as "SM Bus Controller". Anyone know what that is?