I believe I saw this movie on HBO in the late 90s. It’s set in a dystopian future and the main female in the movie ends up having a computer hookup in her neck that she did not know was there. She finds out about it after a group of people find her and cut her neck open over the hookup. She has a friend in a wheelchair who ends up entering a program where he progresses through various levels. The final level he reaches gives him access to a weapon and a robotic suit that allows him to walk but he must hunt his friend with the hookup in her neck.