Hi i am new to the sony vegas scene and have started making frag movies for my Call Of Duty clan

I now know the basics but i need help with 2 things:

1) How can i make the picture look like widescreen eg. Remove the top and bottom of screen

2) How can i have 2 clips running at the same time eg. merge left half screen 1 clip and the right side the other clip and then go back to just the 1 clip

Any help would be most grateful

Thanx