beamer.layout

[Vivek Sharma]

Hi
Has anyone developed a beamer.layout file for presentations?
What do most people use for presentations in Lyx.
I have used the pdfscreen package with lyx in the past and having seen 
some of the examples with beamer wondered if anyone has used this in the 
past?
Any help or guidance appreciated.
Beamer.layout on google was not useful
regards
vivek