(not sure if this is in the right spot so moderators feel free to move this)
I have found that converting a picture so you can use it as a profile picture can be a strenuous task, so here is a tutorial to help make personalizing your profile as easy as possible.
select a suitable picture and save it to your computer(name it so you can find it later).
go to this website (http://www.iconj.com/index.php)then click on the pic to icon converter,then click upload ,and once uploaded pick 256x256 and continue. now download the finished product (your going to want to name this file as well)
enter your profile on yoyoexpert.com and click the forum profile information in the modify profile box, make sure you have selected I will upload my own picture. Select the pictures file. Select the change profile button and boom you have your own profile picture. ;D