iframe question

[theorigin]

I'm not sure why, but when I try putting iframe into my signature on my board (that I just purchased tonight), the iframe is coming up with an error saying page cannot be displayed. I'm not sure if I have to add any coding in regarding iframes, or if I simply forgot to turn something on in the options. Can someone help? I apologize ahead of time if this has already been asked/answered.

[Marky]

HTML must be switched on for iFrames (By the way, turning HTML on is a big security risk as people could run illegal scripts on your site)