Dynamic Dataset?

[Qmoto]

I am having problems with a dataset that calls an SQL 2000 stored procedure.

Each time the page loads, a record is inserted, then when I hit the submit button a second record is inserted. Is there a way I can specify that a dataset is to load only if a certain condition is true? e.g. the form has been submitted

Here's what I've tried, but with no success. Am I close, or shoudl I scrap this and find a better method?

<MM:If runat="server" Expression='<%# If((Request.Form("submit") = "") then Response.Redirect("change.sec.adm2.aspx") %>'>
	<ContentsTemplate>
		<MM:DataSet
		runat="Server"
		id="sg_supportRequestInsert"
		IsStoredProcedure="true"
		CreateDataSet="false"
		ConnectionString='<%# System.Configuration.ConfigurationSettings.AppSettings("MM_CONNECTION_STRING_Intranet_DB") %>'
		DatabaseType='<%# System.Configuration.ConfigurationSettings.AppSettings("MM_CONNECTION_DATABASETYPE_Intranet_DB") %>'
		CommandText="dbo.sg_supportRequest_insert"
		Debug="true">
	  <Parameters>
	  <Parameter  Name="@req_type_id"  Value='<%# IIf((Request.Form("req_type_id") <> Nothing), Request.Form("req_type_id"), "") %>'  Type="VarChar"   Direction="Input" />  
	  <Parameter  Name="@dep_nameShort_id"  Value='<%# IIf((Request.QueryString("dep") <> Nothing), Request.QueryString("dep"), "") %>'  Type="VarChar"   Direction="Input" />  
	  <Parameter  Name="@submittedBy"  Value='<%# IIf((Not Session("AUTH_USER") Is Nothing), Session("AUTH_USER"), "BI\") %>'  Type="VarChar"   Direction="Input" />  
	  </Parameters>
		</MM:DataSet>
	</ContentsTemplate>
</MM:If>