Tech Question - Firefox

I have a tech question that maybe someone can help me out with.....

I am now using FireFox and my blog font comes out all bold when I don't have it specified that way. And then on our website it changes the font to a different font then what is specified in the css.

I have not been able to do lots of searching on it to figure out why and don't want to bug Master over it as He is busy.

So anyone know what I am doing wrong please feel free to leave me a comment or drop me an email.

Edit: Figured out both problems!