[R] help in preparing data for using the package SURVEY

[David Remotti]

hello all, and thanks in advance for any eventual help.
I'am quite new to R, and want to use the package SURVEY to calculate 
results from a sampling.
I have installed the package and started studying it, but I find 
difficulties in understanding how to prepare my data (I actually have 
them in a MYSQL database) for the analysis with R.
Is there any tutorial to help me in organiziing my data ?
Thanks
David Remotti