Windows Vista: Vista Won't Let Me Have Control!

Do this.

For Windows Vista Ultimate/Business/Enterprise:

1- Click Start, and type "secpol.msc" in the search area and click Enter. (You may receive a prompt from UAC, approve/login and proceed)
2- In the left list, choose "Local Policies", then "Security Options"
3- Set "Accounts: Administrator account status" to Enabled.
4- Set "User Account Control: Admin Approval Mode for the Built-in Administrator account" to Disabled.

For Windows Vista Home Basic/Home Premium:

1- Click Start, and type "cmd" in the search area, right click on "Command Prompt" and select 'Run as Administrator".

2- In the command prompt type "net users Administrator /active'" (Note the capital "A" in Administrator) and press Enter, you will get a confirmation as "The command completed successfully".

3- Click Start, and type "regedit" in the search area and click Enter, navigate to: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
Double click on "FilterAdministratorToken" and set it to "0"

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Now log-off, and you'll see new account named "Administrator" is available, click on it to login.