Can't add or remove packages in FC4

[Dave Gutteridge]

I'm running FC 4 with the latest kernel.
My desire was to have the ability to input Japanese, but before I can 
even get to that, I have a more fundamental problem. When I went to 
Desktp | System Settings | Add/Remove Packages to install multilingual 
support, and selected the languages that I wanted to isntall, it said I 
had to install iiimf drivers first. I went on to the web to see if I 
could download these drivers, but despite finding information about them 
on Red Hat's site for Fedora, it wasn't as simple as finding an RPM and 
downloading it.

In any case, I later decided that I wanted to remove some programs that 
might be causing problems with my DVD (which is another issue). But when 
I selected to remove certain applications (like Totem), again the 
Add/Remove Packages interface told me I had to have certain packages 
installed before it could do anything.
Huh? Why do I need packages to *remove* things.

After a little more experimentation, it seems that I can neither add nor 
remove *anything*. It always gives me a list of packages that I need to  
have available before it will update.

The result is that I can not make any changes to my system. What can be 
done about this?

Thank you for any help on this matter.

Dave