About CVS -> SVN scripts, I hear that these are somewhat unreliable due to
the difference in how CVS and SVN work. I have no first hand experience
with them though, and I've only played with subversion very briefly (it's
not installed on our university network, but CVS is - so I decided to stick
with that for whatever software development I need to do here).
cvs2svn seems to be rather good. It was able to do a full conversion,
including the total history. Possibly metadata may have been lost or
modified, but the final svn tree was 100% complete as far as I could see.