We know you've got questions, and if you're brave enough to ask the world for answers, here's the outlet to do so. This week's Ask Engadget inquiry is from is from Paul who is looking for a handset for his tethering needs. If you're looking to send in an inquiry of your own, drop us a line at ask [at] engadget [dawt] com. "Hello! Can you help me decide if I should take my freshly available upgrade on AT&T or hold on for a while. In the past I've made some rash decisions that led to immediate regret and two years of gadget envy. If I had to choose today, I'd pick a Samsung Focus S, because of the overall f