runas /user:*computer name\*account name explorer.exe

User (net user)

description	command
show users	`net user`
add user	`net user /add [username] [password]`
delete user	`net user /delete [username]`
add user to admin group	`net localgroup administrators [username] /add`

Groups (net localgroup)

description	command
show groups	`net localgroup`
shows users in group	`net localgroup (groupname)`
add group	`net localgroup (groupname) /add`
remove group	`net localgroup (groupname) /delete`
add user to group	`net localgroup (groupname) (username) /add`
remove user from group	`net localgroup (groupname) (username) /delete`