(Sorry for the grammar error in the title. Should be "PCs can't connect to my internet-sharing MBP.) Hey all, I had an old wireless router that burned out on me. So as a temporary solution, I've connected the cable modem directly to my MBP and am using the internet sharing function to use my MBP as a temporary access point. My brother's Macbook is successful in connecting with it. However, my roommates Toshiba, running Vista, and my old PC running XP can't connect. Both the XP PC and Vista Notebook can see that my MBP is broadcasting a wireless signal, however, they cannot connect to it at all. I'm currently at work, so I can't tell you exactly what the error message is. Does anyone know of any solutions to this? Thanks!