adding special characters to blog title

Probably easy, but not for me. I know the html code for the trademark symbol but I cannot figure out how to get it into my blog title. I see no way to add html directly in the options panel, and when going to the “header” code, I can see the title…php…bloginfo…’name’ information but I cannot figure where to add the symbol there (if I can) or where the ‘bloginfo’ code information is located if I cannot implement the symbol in the header directly. Any guidance would be appreciated (regular default theme, and I just upgraded to version 2.3, which seems very good in the early going). Thank you in advance for any advice.