how can i instantiate a form through its name[Resolved]

[fret]

here...

'frmname="Form1"
        public void Show(string frmname)
        {
            System.Windows.Forms.Form f;
            f.Name=frmname;
            '....here, how can i identify when i instantiate that 
            'it is pointing to Form1
            ' supposed to be it looks like this...Form1 f=new Form1();
            'then Show();
        }

is this possible? or maybe i'm in the wrong way.
for now i have no idea on it.