Crystal Reports Problem with insert SQL request in crystal report

Message

   Hello,

I use the windows application with connecting to the .mdb (access) database.
The Crystal report is included in VisualStudio .NET 2003 and has a SQL request.

I want to put the new SQL request to the crystal report with Visual Basic Code so that the crystal report then shows another reports.

I use the System.Data.OleDb namespace.
Do you have some tips or a small code which can put the new sql request to the report?

Info: I have searched for this code and could not find it.
Maybe I am stupid or I have overseen it.
And: I am not an Expert in using crystal reports and in VisualBasic.

I hope someone can help me.

T.B. 