Creating many objects of same class...

Question

Hi,

I have 2 overloaded methods given below
public DataSet LoadDataSet(string SPNAME,string FieldID)
{
sqlcommand cmd=new sqlcommand;
}
============================================
public DataSet LoadDataSet(string SPNAME,string FieldID,string FieldName)
{
sqlcommand cmd=new sqlcommand;
}

Now instead of creating 2 objects of the same class, can i declare a sqlcommand object and use it in any number of methods.. i want to put this sqlcommand object in a global class and use it.. Is this correct?