[cvsnt] discard garbage revisions and create new 'latest' based on old tag.

[assaf]

hi,
a user here commited some garbage code all over his branch and
now he wants to get his branch back to a point marked by a tag he 
created previuosly.
he wants to discard all the garbage code revisions and have a new 
'latest' based on that tag.
any ideas / suggestions on how to acheive that ?

  (Tag)                         -latest-
-[good]->[garbage]->[garbage]->

the need is to 'put' [good] after the last [garbage] for many files.

thanks,
Assaf