Move to first record mssql

Hi there I'm looping through an mssql dataset, using while($row=mssql_fetch_array($rsElecTrans)), but now I would like to loop through the same dataset again later on, but inn order to do this I need to move to the first record, so I tried: mssql_data_seek($rsElecTrans, 0); while($row=mssql_fetch_array($rsElecTrans)) // this is line 514 But I get the following error: *Warning*: mssql_fetch_array(): supplied argument is not a valid MS SQL-result resource in *C:\Program Files\Apache Group\Apache2\htdocs\spar\admin\rpt_electrans.php* on line *514 How does that work? Cheers Louis *