Fill a DataSet.xsd with a DataSet :S

Hi people. I'm having some problems with reporting and I thought you could help me (( .NET 2.0 )):

I have created a DataSet (mydata.xsd) trhough the IDE. I also have designed a Report.rdlc, and I did the same with a frame with a ReportView inside, wich use mydata.xsd as a source data.

I have designed mydata.xsd to have 2 columns (user, time). How would you fill this dataset? The reporting tool get the data from this "xsd" file, but I don't fill it anywhere. I fill another dataset I have as a private member of my class, and that's all.

I hope you have undestood me. If not, please let me know.

Thanks in advance.