Has my site been hacked?

Yes, it has.
Change all your passwords.
Check the index.php of your theme and the index.php at the root – there must be some redirect.
Report it to your host.
Set all your file permissions properly: no online editing of themes, that’s how you guys invite the hackers to step in through the open doors…

I’ve already checked everything within my template… and there’s no java/forwarding code.

My host is GeoCities, and their website has been down all day. Do you think this may have something to do with my problem?

That might be…
I also said: check the “short and sweet” index file in the root! (you don’t need java: if I have access to your file it is enough to insert one [1] single line in the head)

What do you mean by: check the “short and sweet” index file in the root!

Go to your site root. Check the contents of the index.php file that you’ll find there.

FIND-FM.COM is a known sponsor harboring affiliate spammers. Did you check if there’s a CGI script for redirection?

Ok….I’m a little more blog illiterate than I should be.

1. How do I “go to my site root”?

2. And what is: CGI script for redirection

>How do I “go to my site root”?

I don’t really have the answer since I don’t use geocities. Is it a free account or paid one?

If it’s a paid one, you probably have access to your ftp server. Find public_html. You should have index.php in it. You may also have a folder titled cgi-bin inside public_html. If you do, look for something suspicious or look for ones with the latest date.