[AccessD] Simple Recordset Question

OK, I have a first grader level question for you all.

I have an access 2003 database and a form.  When I click a button on
said form I would like the code to open a table as a recordset and count
the records.  I know I have done this before and I know I have seen this
done quite easily.  However, I am getting an error that I cannot get
past.

This is my code:

Dim rst_Matrix As Recordset
Dim int_X as integer
Set rst_Matrix = CurrentDb.OpenRecordset("SELECT Matrix.* from Matrix;",
_ DbOpenDynaset, dbReadOnly)

rst_Matrix.MoveLast
int_X = rst_Matrix.RecordCount

On line 3 I am getting a type mis-match.  

What am I doing wrong and how do I get my code to get past this?

Thanks

-Z

Stephen Zayko, PE
Associate Engineer
Stantec
2321 Club Meridian Drive Suite E
Okemos MI 48864
Ph:   (517) 349-9499 Ext. 224
Fx:    (517) 349-6863
Cell: (517) 204-5136
steve.zayko at stantec.com
www.stantec.com