As a DBA we are often required to perform tasks that fall to sys admin category. It may be related to server processes, configuration, disk information etc. Recently i have used a free tool pack PsTools that provides facility to perform many such admin tasks on local or remote machine. PsTools suite includes several individual applications as mentioned in below table.
You can download the tools pack from here. Just unzip it on your disk and call any of these utilities through cmd. No installation package is required.