How can I convert from anonymous to real user account?

[Phil Hollenback]

I checked out a tree via anonymous CVS and proceeded to make a whole
bunch of changes to it.  Now, I have an actual user account and want
to check in my changes.

The problem is that CVS caches the account name in CVS/Root.  Is there
some way I can force CVS to use a different account?

I want to do this because the changes are extensive and merging them
into a freshly checked-out tree would be very cumbersome.