>>>>> "Hisyam" == Hisyam <[EMAIL PROTECTED]> writes:
Hisyam> Hi Floks, How do I change section numbering from 1, 2, ... to
Hisyam> I, II, .... because I need to write an article in IEEE
Hisyam> conference paper format. Thanks. Have a nice day!
Your best bet is to get the IEEEtran.cls document class, which is
supported by LyX. You will be able to find it here
http://www.ieee.org/organizations/pubs/transactions/stylesheets.htm
Note that I have not tried that myself...
JMarc
PS: to give an answer to your actual question: in
Layout>LaTeX_Preamble, add
\renewcommand{\thesection}{\Roman{section}}