A couple months ago, Mark Gibbs discussed the BGInfo utility in his Gearhead column in Network World. BGInfo was written by Bryce Cogswell of SysInternals/Winternals recently acquired by Microsoft.
BGInfo surveys the PC it is running on creates a bitmapped image of the configuration details as an overlay on top of the current Windows wallpaper. BGInfo can also save the data in a number of formats including .XLS and .TXT file. You can even log it to a SQL database.