I went through this the other day, finally figured it out. I do it from tinypic.com but make sure you use the code that is an HTML, they changed so that would be the only one that works. For the siggy I just went on the home page from thebump and created it from there. Once you get the codes you click on the shadow figure of the person in the top right hand corner clic k preferences and then edit signature preferences paste the codes in their and save it it should work
Re: just when i figured the bump out