First, to disable UAC you must uncheck that box and then fully reboot the computer...the changes are not applied until you do.
As to Task Scheduler, it cannot be disabled through services.msc, and will continue to launch automatically as it's deemed by Microsoft to be a critical service used by Windows and third-party software. You should not permanently kill it.
I have tried repeatedly to turn off the user access control thingy in the user account. When I open it up, it says 'check the box to turn it on'. The box is not checked, so technically it SHOULD be off, but everytime I do anything it pops up to ask if I would really like to do that. How do I actually disable that?
Also, the Windows Vista Task Schedular, I have disabled it in services, and deleted all tasks (that it would let me from it) and also removed it from the startup and run locations (registry and otherwise). Everytime I log into Windows, I still get taskeng.exe in my running programs. I can 'end process' which temp kills it for a bit until I run something else then its right back. Is there a way to permanently kill this also? Thanks.