In Windows Vista, you have limited privileges on the machine, although you’re a power user. This means that programs you run have limited permissions, and you must elevate your privileges whenever you want to perform certain administrative-tasks, such as changing system settings or installing programs.
Start++ is a set of utilities to enrich your Vista start menu, but we’re only interested in its built-in Sudo utility.
The Vista Sudo utility is based on the popular Linux Sudo command, which allows a permitted user to execute a command as the superuser (root). So now, whenever you need to run a program with administrative rights, just open the Start men
u and type sudo along with the program name.
Download Start++ from here
After installing start++ just start from your programs
Now you can try sudo command to open command prompt from run option
You can see command prompt running as administrator
Start++ available commands list