Problems validating

My website was 100% valid this morning, but I've added some SEO tags, title tags and now I've ruined it. I have 40 errors now.

http://validator.w3.org/check?uri=http://fier.co.uk/test/index.php&charset=(detect+automatically)&doctype=Inline&group=0&user-agent=W3C_Validator/1.654

I don't really understand what it's telling me, can anyone tell me where I'm going wrong?

Thanks

Line 35, Column 53: an attribute value must be a literal unless it contains only name characters

<a href="index.php"><img src="images/logo.jpg" alt=”Fier Design” border="0"/></a>That's not a normal double quote, and the same is the case for other errors too.

Hmmm maybe mine are set to "" inch marks, I'll have to try replacing, thanks.