Using RCS on Windows XP

Hi,

I downloaded the packages for PC and unzipped the binaries to a suitable
place. But for the first time when I invoke a check in command like this:

ci test.txt

It complains about "ci: RCS/test.txt: No such file or directory". (Note the
directory delimitor is '\' rather than '/' on Windows)

I also tried to put test.txt in a sub-directory "RCS", just like I did in
Linux, but still no luck. What can I do?

Thanks for any suggestions!