How can i trigger a build by tag?

[ziggy]

Is it possible to create a new job that is triggered if a new tag is
applied? For example if i apply a tag called PROJA-0.0.1-LIVE i would
like jenkins to automatically check out and build. The version number
changes everytime a tag is applied so if possible i would like to use
something like a regular expression. i.e. any tag that contains the
string %LIVE% should trigger a build.        Is this possible with CVS
or Subversion CM?