Windows Vista: Stretch 4:3 video to 16:9 (wide screen) in WMP 11 in Vista

Stretch 4:3 video to 16:9 (wide screen) in WMP 11 in Vista

I've got a notebook with Windows Vista Home Premium 32-bit. In WMP 11 I'm unable to find any setting to stretch a 4:3 video to wide screen since my notebook display is wide screen & I don't like having the black bars on the side. Anyone know how to do that? I already know of other software alternatives (so don't list any please) but I want to know about WMP 11 cause I use it very often to stream videos which are in 4:3 format but my notebook display is 16:9. Even the external display which I quite often use is 16:9 format. The notebook has a nVIDIA GeForce Go 6150 graphics processor. I know I can remedy the problem when I use HP QuickPlay, Media Player Classic & VLC Media Player but what about WMP 11?