Google code newbie seeking help again!

Totally newb using google code. Today I found a mistake in one of my files and decide to deprecate it. Now how do I upload an updated file that will be related with this old version? Is that possible?

Thanks!

PS: if I want to upload again with the same name, I get an error, file already exists.

On the Source tab or the Downloads tab?

download tab. Should I use the source tab for code?

For things on the Download tab, I've been appending a revision number ("_0001" for first revision, "_0002" for the second, etcetera). So far that has been a reasonable compromise.

Should I use the source tab for code?

I do. But, I believe, you have to use a Subversion client to upload new versions. In my opinion, it is worth the effort.

Google provides this link for a list of clients...
http://subversion.apache.org/packages.html