O.k., I'm not trying to sound beotchy but I'm feeling...well beotchy.
FoxFi is an application available in the market, and FREE.
You do NOT need PDA Net or anything else to get FoxFi to work. You MAY need to REBOOT your phone, however.
Open the FoxFi app, and check the box to start the wifi hotspot. This will result in a hotspot icon showing up in your notification bar. Do not interact with that icon at ALL. You are turning the hotspot on and off from the FoxFi application itself.
I'm not sure why some think PDA Net is needed.
Also, while I appreciate that everyone things rooting is fabulous, there are very valid reasons for why some of us will not root our phones for tether. So when someone is looking for a wifi tether option and especially when they ask for it for a NON rooted phone, please keep in mind that person may have very valid reasons for why they can't/won't root and they are asking for help on a NON rooted phone. Time and time again I see people post solutions for rooted phones when someone is asking for non-rooted help. And as an example of why someone might not root...those of us using Good to access Corporate email are booted off if our phones are detected to have root. It's important to me to get work email on my device so I can't root.