You need ARTEMIS from the Sanger Centre. It's JAVA so runs on any platform.
See:
http://www.sanger.ac.uk/Software/Artemis/
Charles Chunghun Kim wrote:
> I am looking for software, scripts, or even modules that will allow me to
> generate a publication-quality graphical representation of elements in a
> DNA sequence.
>> More specifically, I would like to be able to map the genes of operons in
> scale, and to be able to add elements such as promoters and other
> regulatory regions.
>> I would appreciate it if responses could also be e-mailed to me (in
> addition to posting).
>> Thanks.
>> Charlie Kim
>cckim at stanford.edu