It might help if you knew what you were talking about.
PC has not allowed name changes for quite some time, and each and every person that asks is told the same thing: Make a new account.
Only people with access to the AdminCP are able to change user names, and even then it's a pain in the butt. if the name change is to be forum wide, and reflect on all your posts, you'd have to run maintenence, which as far as I know only Abby and Andy can do; and they already have enough to do as it is.
Not to mention that it gets confusing with people changing names suddenly. "So-and-so didn't say that! So-and-so2 did!" see waht it would turn into?
It's not worth the time and effort to do, and you have less than 100 posts: Deal with changing names. -_-;;