i dont understand wat u mean by right 'double' click
but to open my computer without a mouse is easy
push the windows key (between CTRL n ALT) and ur start menu will open up....u should have a link for my computer out there just navigate using keyboard arrow keys and push enter to open it
or if ur on d desktop, u can straight away use ur arrow keys to get to my computer and then push enter
or u can jus rite clik on my cpmuter ONCE and then clik on open
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if u mean u wanna exchange the functions of left n rite clik, so that ur rite clik dz all d work of a left clik n vice versa then u gotta go 2 ur mouse properties in the control panel n u can change it from dere