UTStarcom PPC-6700 / XV-6700 / HTC Apache

ok, here is a problem i have, and i think i know why...i think. There are 3 buttons on the side. the top button (button #5) was once used for the voice dial and record (push and push&hold) unitl...i installed microsoft voice command! now, even after uninstalling it, only the press&hold function works, not the push action. anyone had this problem? a fix? and does anyone know how i could just reinstall or restart my phone back to how it was when it came (like how i can do a reinstall of windowsxp on my computer and whipe out everything), that would be perfect. thank you so much.