How make a package

I've used  "package.skeleton" and then I used "R cmd check" and it didn't work.
can you help me

For me it works after setting it up correctly (i.e. filling out the Rd 
files, editing DESCRIPTION, etc.). See the Writing R extensions manual 
for details.


So again:  It's a great idea to tell us
a) what was not working, including any error message,
b) the version of R you are using,
c) the OS you are working with.

Please, be more specific!

Uwe Ligges